Blowing Chunks

A man walks into a bar and asks the bartender for a case of beer, any kind except Schlitz.

The bartender says "What's wrong with Schlitz, don't you like it?"

The man says, "I hate that shit. Last night I drank a whole case of Schlitz and blew chunks.

The bartender says, "You drink a case of any beer you're going to blow chunks."

"You don't understand", says the man, "Chunks is my dog."