One who is constantly seeking/looking to sit on a fat phallus.
Can be contstrewed as the bitch face who will give anything, even his/her left eye to sit on and/or around dicks.
The silly mo-fo that no one wants to interact with at a party.
> My ex-girlfriend is a smelly dick fucker.
> "That leslie sure is a dick sitter-onner. I guess we could consider her a big dick fucker."
> That fucking prick ass bitch is being a motherfucking dick fucker again.