At least Justin Bieber shares with his friends! TMZ acquired this photo of Justin and his pal Khalil Sharieff sucking on one stripper breast each during a recent party.

According to sources with direct knowledge ... the stripper, who came fully-loaded with giant fake breasts and a classy rainbow-colored Playboy tattoo, was hired to "perform" for Justin and his pals during a party at an L.A. recording studio.

Looks like Justin and Khalil wanted to get a taste of the action, at the same time, with Bieber taking a love-bite..

Get more on the story at TMZ.

Scroll down for the photo - Warning Adult Content.