inappropriate rhyming

L excelled herself yesterday in the inappropriate comments department: I was entertaining her while R was putting Rr down for a nap, and made up a song on the fly about how she (L) had her Nemo (the cartoon fish) underpants on backwards. I stalled after the phrase "back to front" and said -- "what rhymes with front?" "I know," said L," it's 'c*nt!"

Cue desperate stalling on my part -- bunt, punt, runt, stunt, etc. -- and efforts to convince her that c*nt isn't actually a word. I am dreading the now-inevitable call from the nursery school...