Xtina, Roots, office supplies on Fallon

DON'T TRY THIS AT WORK: We're about to ask for a larger office-supplies budget after seeing this clip of RCA super-siren Christina Aguilera, The Roots and Jimmy Fallon rocking "Your Body" with only a phone, pencils, stapler and other cubicle essentials for accompaniment.

We were all set to follow suit by raiding the supply closet and performing our ad hoc version of "Bohemian Rhapsody," but what did we get instead? $73 worth of binder clips on Trakin's nipples. (11/8p)