Does anyone else have random laugh attacks?

[Vermilioncore]

When I’m sitting there in serious situations with people who I never met who don’t give two fucks about me, I begin to laugh. Either I remember something or my brain just reacts that way, so I can’t stop laughing and have to hide my face or I’ll burst out in a maniacal laughter
Then I come home and the laughter is gone and nothing is funny then I cry

 

[Deleted member 31024]

Happened to me and the bus once

 

[Lebgfinal]

I laugh about my miserable existence