Freak me means to fuck someone.

You've probably come across such douchebags while going through various facebook pages. Out of nowhere comes an 'Add me' as if they are forever alone or something. These people don't have a fucking life and wouldn't stop such shit no matter what.

The desire of wanting to have sex after either not having it for a while or being rejected

Or a song by lil dicky

when there's little chance of something happening, and you want everyone to know.