Adnan Hot on Britney's Tail -- Again

9/3/2008 2:33 PM PDT BY TMZ STAFF
Just when we had almost cleansed our memory of his existence, professional leech Adnan Ghalib ('memba him?) came within mere feet of thrusting himself back into Britney's life during a trip to Sin City a few days ago.

Brit's ex was seen roaming around the Mirage hotel over the weekend -- the same time Brit was showing off her slammin' bod at the hotel's topless pool. But Douchey Smurf claims he was only there to celebrate his own b-day -- and had no idea Britney was in the city -- proving once again, he's still smurfin' clueless.