I'll go first.
I don't know why, where or how it started but for years it has irritated and annoyed me to no end when people say "Q-pon" intead of "coo-pon" for the word coupon.
What's your goofy pet peeve CC?
You know, I wonder if that is regional?
Some people say que-bee hole for cubbyhole.
Anyway, not that I ever analyzed it until now, I mean, it never occurred to me, but I do believe I say q-pon. It's just how people talk around here. If I heard someone say Coopon, I think I would think they were talking about a chicken farm or that they kept pigeons.