He went up to the bar and yelled "Bar keep, I want 2 cold beers and the roughest toughest whore in the yukon!"
Well, the barkeep gave him to cold ones and told him to go upstairs to the room on the left.
The prospector tossed the barkeep a nugget of gold, grabbed his beers and went to the room. He kicked open the door and yelled "I'm looking for the roughest toughest whore in the Yukon!" and tossed a nugget of gold on the bed.
Well, the whore invited him in, accepted the beer, and took off her clothes, turned around bent over and grabbed her ankles.
Surprised, the prospector said with a smile "How did you know that was my favorite position?"
The whore said: "I didn't! I just thought you might like to open those beers!"