When one suprisingly rubs their boobs on another in a rythmic motion.
Setting: Avanti Nail spa in Franklin Tennessee I wanted to give "Tu" a little bit of an extra tip to thank her for adding some teaboobing to the leg/foot massage portion of my pedicure. It was an unexpected surprise.
Similar to tea bagging (where a male places his testicles in an individuals mouth). Here a female places her breast over someones mouth who is unaware.
Oh my god, did you just see Caitlin tea boobing that guy?