He just dropped the video for a song called "Fast," where he spits rhymes about a girl who drives too fast while wearing an oversized sweatshirt and no pants.
Jaden first posted a link to the song's video on Twitter, before adding a hashtag and tagging Kylie Jenner.
Considering Kylie's gotten multiple speeding tickets as well as been involved in fender benders, we could see this song being about her.
I Used To hate Cody Simpson Because He Got All The Girls When I Should Have Just Show My Appreciation Like I Do Now.- Jaden Smith (@officialjaden) October 7, 2014
The E! reality star has yet to reply to Jaden on her own Twitter, but she's been linked to rapper Tyga lately.
Do you think Jaden's video is about Kylie?