Quote from Adrian Monk in Mr. Monk and the Girl Who Cried Wolf
Adrian Monk: Look at the windshield. Captain Stottlemeyer: Okay, what about it? Adrian Monk: There were four dead bugs on that windshield in the shape of a trapezoid. Captain Stottlemeyer: A trapezoid. Adrian Monk: Yeah. They've been there all day. Somebody wiped it off. Captain Stottlemeyer: Well, maybe she wiped it off. Adrian Monk: Why would she do that? Captain Stottlemeyer: You tell me. Look, Monk, you're the best on-site detective I know. Do you see anything here, anything at all besides the missing trapezoid bugs to corroborate her story?