Or felt the urge to laugh in an inappropriate setting?
I have observed this behaviour in another Aspie guy, as well as (rarely) in myself. It used to be more frequent in my youth, when someone - either a peer or my stepmother - would yell in my face, I actually fought back the urge to laugh, even though the situation was definitely NOT funny. Even around the same time, in university lectures, I found myself imagining that one professor's head turned into a giant potato with tentacles, and I started laughing but pretending that I was having a sneezing or sinus fit, and went out to the washroom where I burst into laughter in the hall before returning.
The students in the hall must have thought I was nuts!! !
I'm not schizophrenic or bipolar, I'm only Aspergers & ADHD with mild Tourettes. But on a rare occasion, I got bitten by the hilarity bug out of nowhere. It probably happens to NTs once in a while, but with the same frequency, I don't know.
I've been to a couple of funerals, but I NEVER felt the urge to laugh there, unlike Mr. Bean.
And speaking of movies there was one time where some guy was sprayed with some kind of toxic gas where it showed his face go contorted with his tongue out and he seemed to suffocate, then I laughed out loud. The girl I was with at the time thought I was kind of bonkers and she was probably right. (BTW, the character wasn't one of the bad guys, he was a victim and a neutral character I guess you could say).
I would infer that this sort of urge to laugh in an improper setting could well be an Asperger behaviour based on difficulty with filtering inner thoughts. But it seems to me to be more of a Tourette's thing. Maybe. I mean it's not as sudden and spontaneous as Tourettes tics, it starts brewing with an irregular thought, to a point where it's VERY hard to hold back the laughter.