Thesaurus was the commercial where it has the thesaurus on M&M'S backwards.
Red: Well, what's it say?
Patrick: Plain, ordenary, low, simple, dough, boring, average, common, video, verb.
(Red checked the M&M's backwards what it says, "Plain.")
Red: Oh, man. Plain's the worst name ever.
Patrick: No, that would be, "dick."
(Screen shows the M&M's bag' backwards what it says, "Plain", and then the bag spins into normal.)
Voice: M&M's, same great chocolate. Much better name.