the act of using your fingers to dig around in someones ass looking for shit, then scooping out the shit and eating it. ass miner. usually inplyimg both parties are gay men.
john inserts his finger into jeff's ass and scoops out some shit, then john eats it. john is an ass miner. jeff is the ass mine.
to mine an ass. a possible insult.
you're such an ass miner, that you've got enough corn to feed poland.