Two Norwegians go to an animal bordello that featured ponies.
They both pick a pony out of the herd and go to separate stalls for an hour of unbridled pleasure.
One hour later, they both emerge from their stalls, one Norwegian obviously satisfied, the other downcast.
The satisfied Norwegian asked his friend what the matter was.
The downcast Norwegian said that he couldn't achieve the necessary arousal to reach fulfillment.
The satisfied Norwegian said, "Which pony did you have?"
The downcast Norwegian pointed to a little chestnut pony standing off by itself.
The satisfied Norwegian walked over to the pony, grabbed it by the ears, stared hard into it's face and said, "It's no wonder! You had the ugliest one in the herd!"
Intentional or not, that's very funny. Reminds me of "Bareback Mountain" action, lol