You know that song, "In My Head" by Jason Derulo? Here's a refresher of the lyrics:
In my head, I see you all over me.
In my head, you fulfill my fantasy.
You'll be screaming, "Oh."
If this still isn't ringing a bell, here's the video:
Now for the reason I even brought this up in the first place. The song is catchy. It's overplayed. But it's really just about this creepy guy that goes to clubs, walks up to girls and says, "You're having sex with me right now IN MY HEAD."
And that is gross.