Nicki Minaj and Madonna Both Bare Their Butts

Nicki Minaj and Madonna don't half-ass anything—much less Valentine's Day!

Both singers recently took to their social media accounts to bare their butts to their adoring fans.

"Happy #VagDay boyz…," Nicki tweeted Thursday, linking to a collage of her in a tiny bikini—shot from behind. "#JerkResponbily #prettygangmakenoise #freaksoniTunes," she added.