And just in case America was still pondering real issues rather than nonsense and name-calling, you know who was on the show after my segment? Hulk Hogan. I wish that were a joke. What a perfect pallet cleanser to help Roto-Rooter out the remaining bits and pieces of rational discourse!
It's palate cleanser--as in the roof of your mouth, or more idiomatically, your sense of taste. A pallet is a wooden thing you store products on at Costco and other fine stores. We can imagine those do need occasional cleaning, particularly if Hulk Hogan and his family stand on them for any length of time.
In any case, we believe a palate cleanser and Roto-Rooter used together in the same sentence is a mixed metaphor, and a painful one at that. We prefer a fruity sorbet between courses (and discourses, for that matter).