Miley Cyrus -- Her Anaconda Don't Want None Unless ... You Got Buns Hun!

Miley Cyrus likes big butts (and she cannot lie) so of course she would hop up on stage and join a group karaoke rendition of the Sir Mix-a-Lot classic "Baby Got Back."

Miley took a Bangerz Tour break and stopped into Cat's Meow, a karaoke joint in New Orleans.

A few girls were up on stage doing "Baby Got Back" when Miley jumped up on stage to join them ... and immediately turned around and showed off the goods.

The question is ...