freaky mcnasty 

Inclined to engage in and enjoy kinky or unusual sexual activities.

That ho be a li'l freaky mcnasty; she always like to be tied up when she get pounded.

freaky mcnasty by Kent October 8, 2003

freak mcnasty 

Freak mcnasty is another way of calling someone a nasty freak, but saying it in a humorous way without offending them.

Jay: I love when girls like my asshole!
Nene: Omg!! You are such a freak mcnasty!

freak mcnasty by Love~Neezy July 2, 2009