Saw this on another Frasier fansite, thought it would be fun to try. So it's pretty simple. One person posts an incomplete quote with blanks, and the person below posts the complete quote, followed by another quote of their choice, with blanks. Ok, I'll start first.
Martin: Well take my word for it, you're sticking your _ _ _ _ in your _ _ _ _ _ _ _ .
Niles: Well my muffin's _ _ _ _ _ !