Mr. Monk and the Three Pies - S2-E11
Captain Stottlemeyer: Mr. Van Rankin, we'd like to search your pie.
Van Rankin: What?
Captain Stottlemeyer: Please don't make me say that again.
Mr. Monk and the Three Pies - S2-E11
Captain Stottlemeyer: I like to have more than 'lack of pie' when I go to a grand jury.
Answer: Notice also that in the opening credits scene when he is touching parking meters her also wipes his hand on his clothes each time he does it.