Promoting Top Model's new college-themed season, which kicks off this Friday, Tyra Banks appeared on last night's Late Night with Jimmy Fallon. Tyra gave Jimmy a lesson in good tooch/bad tooch — explaining all the problems with a "hoochie tooch" (too "hey girl, hey") and the "poochie tooch" (needs tighter Spanx) while lauding the apparently high-fashion merits of the "Gucci tooch." (Soon to come: the "Noguchi tooch," which involves a lot of architectural contortion and bent elbows.) Despite his self-deprecating protestations, Fallon's skills suggest he's either a born toocher or that he practiced in front of his dressing room mirror beforehand. Then again, maybe Fallon just made sure his stylist found him some tooch pads.