'Psych': 'Nasty Boys' Shawn and Gus are back in new Season 7 promo

Oh, you nasty boys. "Psych's" Shawn (James Roday) and Gus (Dulé Hill) are back in a hilarious new promo for Season 7 of USA's detective comedy.

The video mashup, premiering on USA on Sunday (Dec. 16) during the "Royal Pains" two-hour holiday movie event, takes on the ridiculous lyrics (with one comical variation) of Janet Jackson's "Nasty." From that nasty car (the Blueberry?) to that nasty fruit (pineapple?), the clip recalls some of our favorite moments and guest stars from seasons past..

"Psych" returns Wednesday, Feb. 27 at 10 p.m. on USA.