Fence hang

When one is outside and hangs on a fence whilst squatting for a shit

Fam im busting for a shit but there's no toilets!

Dude we're on a field, just fence hang!!

barbwire fence

When giving a BJ and your braces get caught in their pubes and rips them out of their skin.

Dude, last night Lisa barbwire fenced me, it hurts to move!