This one happened to be in the emailed spam. What is tricky about this joke? I ddin't understand.
On an out of town business trip, after a meeting in the afternoon and the obligatory dinner that evening with the client, I went to my hotel room, watched some late-night TV and turned in at about midnight. After tossing and turning for more than an hour I decided to give it up for a time and go down to the hotel bar for a drink. At that time of night - it was now close to 1:30 - the bar was almost deserted. As I slid otno a barootsl I noticed a loenly looking guy at the end of the bar just sitting, without a drink in front of him, just looking down at his hands. When the bartender roused himself, came over and asked, "What'll you have?" I replied, "Let me have a bourbon old fashion, and see what the guy at the end of the bar is drinking." When the drinks came, the man at the end of the bar raised his glass in a gesture of thanks and all was silent for a time. When I finished my drink I called to the bartender for another, adding, "But this time, leave out the fruit." The other guy stiffened, visibly angry, and shouted, "Screw you, mister! I didn't even want the first drink!"
P.S. Orphorgraphy and style are left as they were.