One Joke...?

Two guys are in a boat, fishing out in the ocean.
A Genie appears and said I am a one wish Genie, not three.
What do you wish for?
The first guy says
"I wish the ocean was made of Beer."
Kapow, An ocean of Beer materialises.
The second guy yells at him
"You bloody idiot. You realise now we have to piss in the Boat"?