A gunslinger strolls into a saloon in the Old West, and spots a cowboy leaning on the bar.
"Hey, pardner," snarls the gunslinger, "I want a word with you."
The cowboy ignores him and continues drinking.
"I said, I want a word with you, pardner!" the gunslinger snaps.
The cowboy looks over his shoulder and sneers back, "Mister, in this town we shoot first and ask questions later!"
The gunslinger pulls out his six-shooter and shoots the cowboy in the back. The cowboy falls to the floor, mortally wounded, as the gunslinger walks over to him, leans over the cowboy and says,
"So, when does the Post Office open up?"