“Three wishes,” the genie says.
“First wish,” the stoner grins, “let’s smoke a joint.” They do.
Then, “Second wish, let’s smoke another.” They do.
For the third wish, he says, “Let’s smoke one more.”
The genie, looking concerned, says, “Are you sure? You have only one wish left.”
“Yeah, man, I’m sure,” the stoner replies. They smoke, and the genie goes back in the bottle.
A little while later, the genie comes out of the bottle and says, “Alright, what’s your fourth wish?”