What does ass gambling mean?

ass gambling meaning in Urban Dictionary

1. the act of wagering the retention of the rectal virginity. This is certainly a rather risky wager and higher level technique only to be applied if you are positively positive you can easily win, until you're gay naturally 2. the act of using your butt as a gambling unit for example. ass shuffler or dice roller. this is usually frowned upon by a lot of the betting community due to the unsanitary link between people haviing to play with shit covered cards/dice