I'm not sure if this is a false memory, and it most likely is considering that it isn't mentioned on the Muppet Wiki's "cursing Muppets" article (there are some weird articles on that wiki), but I'm sure Miss. Piggy said the B word once, specifically, in a UK theatrical trailer for Most Wanted, almost the same as this one: only except of saying "wind it, buster" she says "you *b-word*!" (sorry for not typing out the word specifically - I'm in school)
does anybody else remember this trailer? I saw it in a theater, I can't remember what film before, but I do remember the reaction it got from the audience and me - the audience howling with laughter and me just being confused.