Boob-arm

When you and your friend (usually a male) are walking or standing next to each other and a female friend of his (or her's) stops walks towards you and unintentionally puts their breast onto your arm, usually occurring in a horizontal position.

(Guy 1 and 2 are standing next to each other)
Guy 1. So as I was saying is that report due tomorrow?

Guy 2. No she said it was due on Monday.

Girl 1. Hi John! (Walks over to both of them and hugs Guy 1.)

Guy 2. Dude she just gave me boob-arm.

Guy 1. I know.

by HAWT stuff. December 4, 2009

arm boob

A man's bicep that looks like a boob on their arm.

Dang, Ryan hit the Bowflex again and look at his arm boob! I think it got bigger.

by Eeemly May 28, 2008

armpit boob

found when one is very obese creating the appearance of a boob in the armpit area.

Dude...lets g o to a buffet and check out some armpit boob!

by KNOB77 August 23, 2009