when you and/or someone have gone down(oral) on the same girl. past or present girlfriend,
stranger, fling, one night stand, f*ck
buddy, or relative(not from the same family
tree!!)
from the movie, No Strings Attached, the
son had a girlfriend but they broke up, in the future the
father started dated that same girl...the
son's friends called him out on being tongue buddies for going down on the same girl