Say It Ain’t So – Paris Hilton Lies?

Liar Liar, Paris’s pants are on fire, and not just from a scorching case of herpes.  After telling Larry King that she’d never even done drugs, Us Magazine is reporting that she openly smoked marijuana with Cisco Adler while out singing karaoke the other night.

The pair arrived at nearly 1 a.m. with two other girls. In skinny jeans, a black tank and a sequined top, Hilton didn’t get her own cocktail, but she stole sips from Adler’s vodka tonics throughout the night. Later, the burgeoning popstar sang "Bette Davis Eyes" in honor of a friend’s birthday, and stayed onstage for an unexpected encore when the DJ started playing her single, "The Stars are Blind." Musician Adler performed "Brown Eyed Girl," and then left the stage for Hilton’s side.

The duo, who Usmagazine.com sources witnessed making out more than once, were perhaps feeling loose and lovey due to the marijuana they were openly smoking at the club. As the 4 Non Blondes song "What’s Up" played in the background, Hilton sang along, replacing the chorus’ "what’s going on" lyric with "let’s smoke a bowl!"

I’m hoping for her sake that she had "bowl goggles," as Cisco looks like he could be the love child of Schneider from "One Day at a Time" and Carrot Top.