A cowboy walks into a bar, sits down, and orders a beer.
Two other cowboys are sitting a few feet away from him and are talking.
The first of the two says: "Boy, do I really need to pass some air." leans to one side, and lets a little wind out.
The second of the two says: "Man, I seem to have to pass a little air as well." leans to one side, and let's a little wind out.
About five minutes later, the cowboy who walked into the bar says: "Damn, I need to fart" and let's out a bullfrog of a fart.
Both of the two cowboys look at each other and say: "Looks like we've got a virgin".