someone who tags along with a couple so that the couple can makeout with their parents thinking it is a group activity.
She was Jamie and Rachael's makeout bitch.
by Anne E June 14, 2006
A third person, added to a couples' plans so that the couples' parents think it is a group activity
Sarah the makeout bitch sat in the corner while Tim and Jane went at it
by AE June 17, 2006