Careful what you wish for

Two guys in a row boat are fishing on a lake. A bottle floats by.
So one guy grabs the bottle and brings it on board. They find that
the bottle has a cork in it, so they pull it out.
Smoke starts pouring out of the bottle, and a Genie appears.

The Genie says, "you have released me from the bottle, so I will
grant you one wish".

One guy says "I wish the lake was full of beer".

The Genie says "It is done" and disappears.

After awhile of drinking beer, one of the guys all of a
sudden gets mad and yells at the other guy
"YOU IDIOT, NOW WE HAVE TO PEE IN THE BOAT".