1. An unfavorable place or region, a backwater or insignificant place. A dive or undesriable business or establishment. 2. A bad part of something. 3. The worst part of a bad thing or place.
A term used to speak about sex when trying to disguise that you are talking about sex. "Armpitting" can also be visually depicted by making a fist and rubbing it in and out on your opposite side armpit.