Leprechaun Fact

One day a guy walks into a pub with a small paper box. He sits down, opens the box and a leprechaun pops out of it. The guy tells the bartender, "Give me a dark beer and a shot of whiskey for my little buddy here."
An other guest at the counter watches all of this. After the leprechaun drinks his whiskey, he runs down to the end of the counter and spits in the guest's face. Then he runs back.
The guy with the box says, "I want an other dark beer and a shot of whiskey for my little buddy here."
After the leprechaun drinks his whiskey, he runs down to the end of the counter and spits in the guest's face. Then he runs back.
The guy with the box says, "I want an other dark beer and a shot of whiskey for my little buddy here."
And again, after the leprechaun drinks his whiskey, he runs down to the end of the counter. But this time the guest is waiting for him, he grabs the leprechaun and holds him up in the air.
He says, "I will cut your tiny little pecker off, if you spit in my face again!"
The leprechaun laughs and replies, "We do not have peckers, this is a leprechaun fact."
Then the man argues, "If this is a leprechaun fact, then how do you pee, ha'?"
"By spitting," says the leprechaun.