A friend of mine got fired over Zoom and laughed. Not a bitter chuckle, a real, bright, sitcom laugh, right into the camera, while her manager read from an HR script. She spent the next week convinced this proved something dark about her. That she didn't take anything seriously. That she was, quote, "broken in a specific way."
She wasn't, and neither are you. If you laugh at funerals, giggle when someone tells you terrible news, or feel a smile crawl across your face while you're being scolded, here's the honest answer up front: this is nervous laughter, it's common and natural, it's largely involuntary, and the best research we have suggests it's your nervous system trying to regulate an overwhelming feeling, not evidence that you don't have the feeling. Discover Magazine's overview of the science puts it plainly: this kind of laughter grows out of anxiety, tension, confusion, or embarrassment. It's the pressure valve, not the pressure.
Which is worth sitting with for a second, because most of us have quietly filed a wrong-moment laugh under "proof I'm a bad person." The science says almost the opposite. People who laugh when things are darkest tend to be feeling more, not less.
The lab where people laughed at screams
The first researcher to really document this wasn't studying laughter at all. In the 1960s, Stanley Milgram ran his infamous obedience experiments, the ones where ordinary volunteers were instructed to deliver electric shocks to a stranger in another room. The shocks were fake and the screams were staged, but the volunteers didn't know that. And something strange kept happening: some of them laughed when they heard the screams. Not because they were enjoying it. These were people who were visibly sweating, trembling, begging to stop. The Association for Psychological Science notes that the laughter actually increased as the voltage went up.
Read that again. The more distressed people were, the more they laughed.
Milgram's subjects weren't monsters. They were maxed out. Their bodies had run out of proportionate responses and reached for whatever was on the shelf. That's the pattern underneath your funeral giggle too: the laugh arrives precisely when the feeling exceeds what your face knows how to do with it.
Laughter was never really about jokes
Part of why the wrong-moment laugh feels so damning is that we assume laughter means I found that funny. It mostly doesn't. The late neuroscientist Robert Provine spent years eavesdropping on real conversations, logging over 1,200 laughter episodes, and found that roughly 80% of laughter isn't a response to anything resembling an intentional joke. In his UMBC work, he put the joke-adjacent figure even lower: only about 10 to 15 percent of the comments that precede laughter are even remotely joke-like. Laughter, he argued, is fundamentally social glue. Its source is other people, not punchlines.
Provine also pointed out something you already know from experience: you can't laugh on command any more than you can cry on command. Try it. Right now, produce one genuine laugh. You'll get a hollow little "ha" that convinces no one. Laughter is involuntary machinery, which means blaming yourself for a laugh at a funeral makes about as much sense as blaming yourself for a sneeze. (The flip side of that involuntariness is its own frustration, which is why some people find they can't cry even when they want to. The tap runs both ways, and you're not holding the handle.)
So what is the machinery doing when it fires at the worst moment? Two ideas, and I think they're both partly right.
The first comes from neuroscientist V.S. Ramachandran, who called nervous laughter a kind of "false alarm" signal: a way of telling ourselves, and everyone around us, that the horrible thing isn't as horrible as it appears. It's the brain stamping DON'T PANIC on a situation that very much warrants panic. The team at Science of People describes nervous laughter as doing double duty along those lines: it discharges built-up tension in your own body while signaling to others that you're not a threat, softening a moment that's gone rigid. Which is why you laugh hardest in the situations where laughing is most forbidden. Church silence, a boss's office, a hospital hallway. The forbiddenness is the tension, and tension is the fuel.
The thermostat theory
The second idea is my favorite, because it reframes the whole thing. Yale psychologist Oriana Aragón and her colleagues study what they call dimorphous expressions: moments when one emotion produces the expression normally reserved for its opposite. Crying at weddings. Wanting to squeeze a puppy that's too cute. And yes, laughing when you're afraid or grieving. In their 2015 Psychological Science paper, Aragón's team proposed that these crossed wires exist to regulate emotion. When a feeling spikes past what you can comfortably hold, your system reaches for the opposite lever to pull you back toward baseline. Joy that's too big borrows tears. Fear that's too big borrows a laugh.
A thermostat, basically. The AC kicking on because the room got too hot.
And here's the detail that should retire your shame for good: Aragón's research found that people who do this do it across the board. If you laugh at funerals, you're probably also someone who cries at good news or grits your teeth at adorable babies. It's a general trait, and what it reflects is intensity of feeling. The laugh at your grandmother's funeral wasn't proof you didn't love her. It was overflow. The feeling was so big your face had to open a second exit.
I've noticed the shame around this almost never survives being said out loud. "I laughed when they told me" sounds unforgivable in your head at 1am and turns out to be strangely ordinary once you actually say it, even to no one in particular. That's part of why we built Joice: some confessions are easier to talk through than to write down, and the wrong-moment laugh is exactly the kind of thing that loosens its grip once it's out of your throat and into a sentence.
The one version worth mentioning to a doctor
An honest caveat, because "it's totally normal" has limits. There's a neurological condition called pseudobulbar affect, or PBA, which causes brief, genuinely uncontrollable episodes of laughing or crying that don't match what you're feeling inside at all. Cleveland Clinic notes it results from brain injury or conditions like ALS, MS, or dementia. The distinction matters: nervous laughter is your emotions overflowing; PBA is expression disconnected from emotion entirely, often out of nowhere. If you're having repeated uncontrollable episodes, especially alongside a known neurological condition or after a head injury, that's a conversation for a doctor, not a blog post.
But the funeral giggle? The fired-over-Zoom laugh? The smile you fought while being lectured? That's just a nervous system doing what nervous systems have been documented doing in labs since the 1960s. Milgram's subjects did it while trembling. Aragón's participants did it because they felt too much, not too little.
My friend eventually told the fired-over-Zoom story at a dinner, braced for horror. Instead, four people at the table immediately volunteered their own: a laugh during a breakup, a giggle at a diagnosis, a full snort at a graveside. The whole table ended up laughing, appropriately this time, at all the times they'd laughed inappropriately.
Which, if Provine was right about laughter being social glue all along, might be the most fitting ending this reflex could ask for.