So, there's this really randy rooster in the barnyard. He's humping everything in sight, the hens, cows, horses, even the dog. The farmer takes him aside and says, "Look, you have a lot of stamina, that's great, but you're gonna wear yourself out. Too much of a good thing is gonna kill you."
The next morning the farmer comes out to find the rooster in the middle of the barnyard laying on his back, eyes closed, legs straight up in the air, vultures circling overhead, looking dead as a doornail. The farmer says, "I told so." The rooster opens one eye and says "Shhhh. If you want to fuck vultures, you have to play their game."