Laughter is a reflect, like a flinch or a shiver. Its onset can be uncontrollable, and once you start, you can't stop.
In a popular thread, people shared the most unfortunate moments where they couldn't help but laugh their a**es off, and hopefully you're not reading this at a funeral.
Was getting into the hearse on the way to my grandma’s funeral.
My sister had pulled out her phone, opened Pokemon go, and was in the process of catching a Charizard next to the hearse driver’s door.
She noticed me staring, looked me dead in the eye and solemnly said, “gotta catch ‘em all.”
A serious 3 week trial of a serial child molester. For some reason, during closing, the prosecution thought it would be a good idea to demonstrate how a pantyhose mask changes a person's features. So they had the lead detective put on a pantyhose mask and walk sideways in front of the jury box.