Two guys are fishing in a boat on a large lake when one of them gets a bite but it is only an old bottle. He pulls it out of the water and starts to wipe it off when a giant genie appears.
He tells the lucky fisherman he can have one wish. After some thought the man wishes that the genie changes the water in the lake to beer. The genie grants the wish and the fisherman says to his pal, "Isn't this great! We have a whole lake of beer!"
His friend replies, "Not really, now we have to piss in the boat!"
