Booty Caller 

(Noun) A person that habitually calls or texts others for casual sexual liaisons

"Every night after work, the booty caller sends seductive invitations to willing participants."

Booty Caller by Max Bush August 27, 2009

booty callee 

The person being called for casual sex.

The booty callee is the person being called for sex. The giver, the participant that didn't initially want the sex.

booty callee by calveena October 14, 2009