re: Why do we always laugh when other people fart or we see someone get hit in the nuts

My son is 7. I'd have to ask him to see why it originates there. H thinks farting is hysterical. Poop humor is to him Richard Pryor, George carlin, and Dave Chappell all rolled into one.

I of course still think it is hysterical. As a nurse there is no higher comedy than blowing arse in the tiny medication room, telling your buddy "good luck" as they walk in and see their face contort in horror then realization that they are trapped in "fart hell". The more critical the med needed, the more hysterical.