Some cowboys go to a saloon for a drink... Some rough-looking cowboys saunter into a seedy saloon looking to wet their whistles. ""Zeke, first round is on you!"" says the leader of the bunch. ""Sure thing, Duke"" says Zeke, and tosses a few coins on the bar. The bartender fills up the glasses, and the men finish off their first round in no time at all. ""Jeb, the second round is on you"" says Duke, and so continues the evening with Duke assigning each man to pay for a round. They are all getting…