WARNING: GRAPHIC CONTENT.

Dude… that’s so not cool.

The littlest but lippiest tycoon of the Kardashian/Jenner family is dating a rapper called Tyga, who’s 25 years old.

Kylie Jenner just turned 18.

That’s their business (and her mother’s? Kris? Where ya at?), but you can’t help feeling a little protective of the teenager when her boyfriend’s all over the internet rapping about her vagina.

You lied, Kylie. You lied.

His first charming effort was a brag about how having sex with an unnamed underage girl could get him in trouble with the law.

That’s from Pleazer. Is there a Pulitzer for songwriting?

Next up, it’s Fuk What They Talkin Bout, which also seems focused on his young girlfriend.

And they say romance is dead!

Comically crap rhymes aside, this is a kid, a (then) 17-year-old girl, whose body and sexuality are being used for the bragging rights of a grown man. A grown man with a two-year-old son, no less.

Oh yeah, and this comes as the world celebrates Jenner’s coming of age by offering her three separate porn deals.

Just… no.

This is how Kylie spent her 18th birthday…

Kylie Jenner's 18th Birthday

Sisters.

Caitlyn and Khloe.

Kim and Caitlyn.

Kim, Kris and Caitlyn "The Parent Trap."

Sisters.

Kylie's birthday outfit.

Happy 18th Birthday Kylie.

Kylie's pre-birthday birthday present.