A girl who is in love with cock; girl who wants the cock in her mouth at all times.
What a fucking cockgirl, all over his cock and shit.
A slutty chick that simply wants to get railed and doesn't expect you to provide her with any benefits other than your cock. She does not require dinner, a movie, or in most cases, anything other than for you to say "what's up?" Cock girls usually, but not always, have severe daddy issues and long to be dominated physically, with a cock.
"Damn bro, did you see that cock girl that Josh brought home last night?" "yeah, i thought he said he was tired of cock girls?"