Two guys are stranded in the desert and are dying of thirst. In the distance, they see a genie lamp laying in the sand. They rub the lamp and out pops a genie.
The genie offers them each one wish to quench their thirst. The first guy quickly says, "I wish for a never-ending supply of water!" And just like that, a giant river appears out of nowhere and starts flowing towards him.
The second guy, not to be outdone, says, "I wish for a never-ending supply of Diet Coke!" And just like that, Diet Coke starts raining down from the sky.
The first guy is ecstatic, drinking from the river and quenching his thirst. But the second guy is not satisfied. He looks at the first guy and says, "You know what? I wish I had a gigantic glass to put all this Diet Coke in!"
And just like that, a giant glass appears in front of him, dwarfing him in size. But as he goes to fill it up with Diet Coke, the glass tips over and spills all the soda, leaving him standing in a puddle of Diet Coke.
The first guy looks at him and says, "Well, looks like you really screwed the pooch with that one."
The second guy replies, "Yeah, but at least I'm not the one drowning in a river of pee."