Tastes Like Diabetes: At one point, the cast got annoyed with a handfull of channel dwellers who kept complaining that the show was getting too raunchy. In response they split one episode into two parts - First half was The Squeaky Clean Pawpet & Friends Show which fit this trope, followed immediatly by The Poink Show which allowed the naughty weasel to crank the raunch Up to Eleven.
Viewer Gender Confusion: Given the reuse of the same models of puppets for different characters, including different genders, you can never be quite sure what you're getting when certain puppets are pulled out. Very weirdly done with Dookie/Crapalina, a sheepdog puppet which is somehow both male and female at differing times...because Crapalina is really a post op Dookie. Even stranger still when you consider that Dookie keeps showing back up anyway.
Happened again with Tantrum, who was revealed to be a girl.