Mark went to his usual pub and sat down at the bar.
The bartender asked, “What’ll it be?”
Mark sighed and said, “Just give me a glass of water.”
Stunned that one of his regulars didn’t order a pint, the bartender asked, “What’s eating you Mark? Why aren’t you drinking?”
With another heavy sigh, Mark said, “I don’t think I should drink anymore. I got so drunk yesterday that I blew chunks all night.”
The bartender gave an understanding nod and said, “Well, it’s not unusual to get sick after drinking a bit too much.”
“No, No”, replied Mark. “You don’t understand. Chunks is my dog!”