Chunks

Dude goes to a bar and gets absolutely shit faced drunk. The bartender is watching him all night to make sure he doesn't do anything crazy and makes sure he gets a ride home. The next morning the dude comes in with a crazy hangover.

Bartender says "Hey bud, how you feelin this mornin?"

Dude says "I feel AWFUL, I've never been in this much pain."

Bartender: "Well you know, the best way to get rid of a hangover is to start drinkin again!"

Dude: "I can't man, i was blowing chunks all night long."

Bartender: "Oh no man, you'll be fine. Just have a drink, they're all on me. Don't worry about it."

Dude: "I don't think you understand.....Chunks is my dog."