Wanna see Brooke Hogan covered in lube? Well, you're in luck.

Brooke was doused in some sort of slippery fluid Thursday in Santa Monica while trying to climb UP a slide. It wasn't just for giggles -- Brooke, Casper Smart, Drake Bell, Lil Mama, Selita Ebanks and several other celebs are taping a new season of 'Champs vs. Stars' for MTV.

Brooke and co. take on another team of retired athletes and celebs for the competition reality show.

Check out the video ... we can't tell who won this particular event.

Other than the spectators, that is.