Tyga is in BIG trouble for singing about 'penetrating' Kylie Jenner!

Momma Kris is not happy with Tyga! (Greatstock/Splash)
Momma Kris is not happy with Tyga! (Greatstock/Splash)

Los Angeles - Tyga reportedly raps about sex with Kylie Jenner in his latest song and it isn't getting good reviews!

The Rack City hitmaker released a new mixtape which includes a track called Stimulated earlier this week and it's been claimed the lyrics refer to his bedroom activities with the 18-year-old Keeping Up with the Kardashians star.

In the song he raps: "I'm stimulated, I'm at the bank, I'm penetratin', I'm puttin' in, I'm penetratin', I'm gettin' big, she stimulated.

"They say she young, I shoulda waited, she a big girl, dog, when she stimulated."

Meanwhile, Kylie Jenner's family reportedly think Tyga "completely disrespected" her in his new song.

The reality TV star's parents, Caitlyn and Kris Jenner, and siblings are furious with her 25-year-old boyfriend for boasting about having sex with her on the track and have branded his raunchy lyrics "so disgusting".

A source said: "This is just so disgusting that the Kardashian family cannot even believe Tyga went there.

"Tyga knows not to discuss Kylie with anyone and then he goes and writes a song about having sex with her. It is just absolutely repulsive!"

The rapper recently joined Kylie and her family, including sisters Kim Kardashian West, Khloé and Kourtney Kardashian, on holiday in St. Bart's, but has now "lost huge brownie points".

The insider told gossip website RadarOnline.com: "He was doing so well and getting along great with Kylie's sisters and parents and now he just lost huge brownie points because he completely disrespected her."

The couple previously denied they were dating, but finally went public with their relationship after Kylie's 18th birthday earlier this month.

Here's the song if you'd like to hear it: