Kylie Jenner and Tyga partied it up at The Nice Guy in West Hollywood on Friday night, and from a steamy make out session to butt grabbing, the duo were all over each other. Could Kylie be the first member of the Kardashian family to post a sex tape on Snapchat? Because after watching these clips, she's getting pretty close to it!

After groping and kissing on the dance floor, Kylie posted a snap of her main squeeze outside the club and she captioned it, "Baby daddy." Later on Tyga left the club with several male pals (Kylie must have already headed home, as she was nowhere to be seen) and get this -- one of the rapper's friend's was photographed holding a gun! Kylie's really rolling with a classy crew...

The only question is ... what does mama Kris Jenner and the rest of the fam think of this?