Maybe you've had your fill of onstage blow job antics in the hip-hop world, or least of talk about such public oral escapades, but Machine Gun Kelly hasn't.

At Friday night's show at the Monroe Lounge in Dallas, MGK got some extra attention from porn star Rachel Starr as she casually and publicly went to town on the rapper. The two, if you're not caught up on your MGK gossip, are a bit of a thing — "friends with extreme benefits," as the Dallas Observer dubbed — and MGK's talked in interviews about making their very own sex tape.

Plenty of folks in attendance Friday night grabbed their phones and captured vids, one of which you can see below (NSFW, but that goes without saying).

(Via Dallas Observer)