someone who constantly takes the side of the opposite sex, usually seeking gratification; gratitude or sexually otherwise. the bait rider will disregard all morals and logic in order to please the bait he/she wishes to "ride" even at the cost of their their self respect and reputation.
sexydumbhoe: you're so annoying!
mr.coolguy#1: fuck you bitch!
baitrider: yo don't talk to her like that you prick!
sexydumbhoe: omg you're so sweet.
mr.coolguy#2: damn, bait rider like shit.