Downing alcohol through ones anus to get extremely drunk. Jackass coined this by asschugging beer through a beer bong into stevo's ass.
Me: Dude wanna get really drunk?
Friend: Hell yeah I'll grab the ass funnel, you get the moonshine
Me: Ass chug ready?
Friend: Ass chug 10-4 over
Me: commencing ass chug
Friend: Hell yeah I'll grab the ass funnel, you get the moonshine
Me: Ass chug ready?
Friend: Ass chug 10-4 over
Me: commencing ass chug
by BUTTCHUGASSPLUNGE April 18, 2014
Drinking beer which is poured through the crack of another's ass on the way to the drinker's mouth. Usually a fraternity ritual where the drinker lies on his back, a bare-assed brother crouches directly over the mouth of the drinker, and another brother pours the beer down the length of the croucher's ass.
Surprisingly, the new low carbohydrate beers retain much of their crispness when they are ass chugged.
by Not Telling December 5, 2003