Inspired by a certain thread I just read tonight, but I won't say which one so as not to make a TAAT (though I'm sure people will work it out anyway, lol) It got me wondering about something else, though.
I've always wondered if I am odd/weird in having a few 'irrational giggle triggers', so to speak. I've always assumed it's just me, but even at the grand old age of 50 I still cannot hear anyone burping without getting the giggles big style. It perplexes me... I was well brought up, my family isn't coarse or crude at all and I got told off if I burped myself (so did my dad), yet it always just used to completely crack me up. Fair enough as a child - I guess it probably gave the giggles then because it was forbidden - but still to be cracking up over burps as a (normally intelligent, sensible and adult) woman of 50?! embarrassed titter
Another one: I'm in an amateur theatre group and get the helpless giggles for some reason I can't fathom when I fluff lines in rehearsals, I can never get myself back on track which can get embarrassing! It gets worse if anyone takes the mickey out of me for fluffing the line... I think that must have a nervous origin of some kind, although I don't feel consciously nervous in rehearsals (and, thank goodness, it's never happened during a show...) The giggles over burping, on the other hand, I cannot figure out for the life of me...
Is it just me? 
(I'm fine with replies along the lines of 'Yes, it's just you'/'YABU and weird', in fact I'm half expecting them. )