Tyga calls Kylie Jenner lame!

What's going on Kylie Jenner and Tyga? Just days after the pair reportedly ended their relationship on Tuga's birthday on Thursday, the rapper goes and release an expletive track called 'Happy Birthday', which is allegedly about his ex!

The Make It Nasty rapper posted an Instagram snap of himself in the studio last week, which he captioned "right now". And the lyrics in his new track appear to be about their break-up!

READ: Khloe Kardashian Slams Lamar Odom For Not Taking Their Vows Seriously

READ: Kylie Jenner And Kendall Jenner Are Egged In Sydney

"Think I'm worried 'bout a rumour?" he raps. "Whoah I got a big crib, how many rooms here? It's a shame, lame's all you'll ever be. Now you're telling me - all I get is jealousy." Ouch!

This comes just before Kylie, 18, posted a picture of the pair lying down together on Snapchat, leading to speculation that the pair are giving things another go!

While the picture does not show their faces, Tyga's distinctive hand tattoo can clearly be seen.

"Everyone needs to chill," she captioned on the pic.

"They are on a break. They were just a week or so ago talking about 'ever after' and things got messy this past week," a source says.

"Kylie wants time to just be by herself and do her. Tyga is not giving up as that's his one and only lady."