Tyga has been catching fire his latest song, "Stimulated," whose racy lyrics were believed to be alluding to having sex with girlfriend Kylie Jenner.

Many fans may have been cringing upon hearing the lyrics of "Stimulated," especially since Tyga's girlfriend just turned 18 years old this month.

Gossip Cop quoted a line in the song: "They say she young/I shoulda waited/She a big girl, dawg/When she stimulated."

Is Kylie Jenner offended about Tyga's "Stimulated" lyrics? Not really, according to a source close to the circle of the "Keeping Up With The Kardashians" star.

"Kylie thinks Tyga is a musical genius," an insider told Hollywood Life. "She's so proud to call him her boyfriend and nothing could ever change that. She knows raunchy music is just part of the rap game and Tyga's style."

"She knows all the words of his songs- sometimes even better than he does. She heard 'Stimulated' way before he dropped it and thought it was great," the source added.

However, Kylie Jenner's parents purportedly have a different opinion of Tyga's lyrics for "Stimulated."

"Kris [Jenner ]and Caitlyn [Jenner] aren't as impressed and wish he would tone some of his songs down now that he's practically a member of the family," the source claimed.

Before she turned 18, Kylie's relationship with 25-year-old Tyga has been much scrutinized by the critics. Amid those issues, Kylie's half-sister, Khloe Kardashian defended her youngest sister's relationship with the rapper in a magazine interview last month.

"I think at 16 I was probably f***ing someone that was in their 20s, for sure," Khloe Kardashian told Complex. "...Kylie is not a normal 17-year-old."

"Kylie is taking business meetings and bought her first house, or she's going on a private plane with Karl Lagerfeld to take a meeting. That's not even what people do in their 30s. It's a rare circumstance, so let's treat this as a special case."