What was written on Caitlin's jacket?

Throughout the show, Caitlin wore a black leather jacket that had something written on the side pocket in white letters that looked like they were made of duct tape. I would swear it said "F--ck You", with a really big letter "U" in the first word that made it hard to see the whole word at once.

I'm pretty sure that would never ever be allowed on basic cable, let alone on a Y7 rated childern's show, but it appears to be there all the same. I noticed it when the show originally aired and then when I recently saw a rerun on The N, it caught my eye again. Anybody know the full story about it?