I used to use false laughter when a joke wasn't funny, or went over my head. Back in my teens and early twenties. When I was horribly insecure and socially inept.
Nowadays, not so much. There really aren't a lot of original jokes, just variations on old ones, so I'm never in the position of not "getting it". I either find it funny, or not funny. Depending on who is telling the joke, or story, my reaction varies. If a joke or story is genuinely funny, I will genuinely laugh. No matter who tells it. If it's not, and the person is a friend, or a co-equal at work that I know well, I'll tell them something like, "don't quit your day job for a stand-up comedy gig". Kind of in a kidding around way. If it's my boss, someone in a position of authority like a pastor, or someone I don't know well enough to be blunt with, I have perfected the art of the smirky chuckle. Kind of a half smile and a "heh, heh, heh" sound.
There isn't much point in being rude to anyone needlessly.
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AQ 34
Your Aspie score: 104 of 200
Your neurotypical (non-autistic) score: 116 of 200
You seem to have both Aspie and neurotypical traits