Adrianne Curry -- Gay Bar Grab Ass

Former "Top Model" star Adrianne Curry got a real handful last week ... of her friend's ass -- hitting West Hollywood for a wild girl's night ... filled with sex toys, lube, and a gay bar stripper pole.

You may recognize the girl attached to the aforementioned ass -- it's Sarah Carroll ... from that shameless Virgin mobile marketing ploy known as "Sparah." If you care, Google it.

We're told the gaggle of girls kicked things off Thursday night at the Hustler store -- where Curry dropped $200 on lube and vibrating doohickeys -- and then ... they all hit Boys Town for some gay bar action at the The Abbey.