Boob Hug 

When a guy is sitting down and a girl comes up behind him and rubs her breasts in his face along with a hug.

Chad was caught up in paperwork in his office when Kiersten came in and gave him a Boob Hug that made his boner grow!

Boob Hug by SlopNChop December 20, 2016

Boob hug 

A hug during which one or both or all (if 3-way or more) of the people involved enjoy feeling the other person's breast(s).

"I wonder if she knows I'm her friend mostly because of her boob hugs..."

Boob hug by NzGuy75 March 20, 2012

no-boob hug 

A type of hug in which a female distances herself to the extent that her boobs have no physical contact with her male counterpart. The no-boob hug is often employed to minimize touching and to signal disinterest in the initiator or recipient of the hug.

Dude, my ex-girlfriend just totally dissed me with a no-boob hug.

no-boob hug by Sad, Pitiful Half-Asian March 30, 2009