His Ass
At the end of smoking marijuana through a glass pipe, one might suck through the ash of the smoked marijuana where a whole forms showing the bottom of the bowl. This hole is known as "his ass"
Example:
I was ripping my bowl yesterday and it shit on me so i filled his ass up with green and continued smoking.
I was ripping my bowl yesterday and it shit on me so i filled his ass up with green and continued smoking.