A cowboy walks into a bar in Texas, orders three mugs of beer and sits in the back room, drinking a sip out of each one in turn. When he finishes them, he comes back to the bar and orders three more. The bartender approaches and tells him, ""You know, a mug goes flat after I draw it, it would taste better if you bought one at a time."" The cowboy replies, ""Well, you see, I have two brothers. One is in Australia, the other is in Dublin, and I'm in Texas. When we all left home, we promised that wβ¦