Tyga Kylie
"Stimulated" rapper Tyga made some cringe-worthy references about "Keeping Up With the Kardashians" star Kylie Jenner that her family reportedly is not happy about. The couple is pictured together on May 20, 2015. Getty Images/Mike Windle

“Keeping Up With the Kardashians” star Kylie Jenner and her rapper boyfriend, Tyga, don’t have to hide their relationship since she turned 18 Aug. 10, but the entertainer might want to tone down the sexual references in his songs. Kylie’s family think the single “Stimulated” from his mixtape, “F--- Wat They Talkin Bout,” is “disgusting” and “repulsive,” an insider told Radar Online an exclusive report Tuesday.

“Tyga knows not to discuss Kylie with anyone, and then he goes and writes a song about having sex with her,” the source told Radar Online, and added “It is just absolutely repulsive!”

Tyga, 25, and Kylie have reportedly been dating for months, but they didn’t go public with their relationship until the reality star turned 18. They showed tons of PDA (public displays of affection) during a vacation in St. Barth’s, but the raunchy lyrics from his new song apparently have her family on edge.

“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 source told Radar Online.

If the family is truly upset about the song, it might have been the following unsettling lyrics that unhinged them. He raps, “They say she is young, I shoulda waited. She a big girl, dawg, when she stimulated. She a big girl dawg, I’m puttin’ in. Yeah, I’m penetrating.”

One person who doesn’t mind the offensive lyrics is Kylie, Radar Online wrote in a different story. Kylie actually thought that the song was cute and knew about it before it came out,” the source said. “[Tyga] is her first true love, and she is very much thinking that she will be with him forever.”

“Stimulated” isn’t the only reference to Kylie. Tyga released the video for “Glitta” Tuesday. Though Kylie isn’t in the music video, he talks about dating the teenager: “They say the s--- ain't a game, but you playing with the digits/ Motivate my n----- can't complain when your chick name Jenner.”

Follow me on Twitter @mariamzzarella