Todrick Hall is serving up a piece of cake -- with a little help from pop star Aubrey O'Day.

In "Dem Cakes Tho," the video for Toddy's latest hip-shaking tune, the triple threat and O'Day serve as judges for twerking auditions at a circus, complete with fire breathers, tumblers and jugglers. And throughout the tryouts, one thing is clear: It's all about the booty.

"This is an open-call audition for the world's greatest bubble butt. If your booty is missing, then be gone, you ain't make the cut," Todrick sings.

Only the best for Toddlerz Nation, obviously.

Watch Todrick, O'Day and the rest of the gang in the entire video for "Dem Cakes Tho," feel free to buy the song on iTunes here and catch the next episode of "Todrick" on Monday, October 12 at 10:30/9:30c!

Bonus clip: Bust a move like Todrick and company with the step-by-step choreography of "Dem Cakes Tho"!