A guy is in a bus station, and goes into the men's room to piss

A guy is in a bus station, and goes into the men's room to piss.
When he walks in he sees a leprechaun with the most enormous dick he
had ever seen. As he pees, he cannot avoid spying on the giant
member of the tiny man dressed in green. The leprechaun zips up and
the man asks him if he is indeed a real leprechaun.
The little man says, "Aye me boy, I'm a leprechaun, and I can
grant you three wishes."
"Oh neat," comes the reply, "What do I need to do?"
"Well, havin' such a large cock makes it a bit awkward with the
ladies, the thing not fittin' and all ... I'll grant you your three
wishes if you wouldn't mind suckin' me dick until I come." The man
is a bit taken aback, but agrees, because he knows he can wish for
anything he wants later. After the green man has come, he starts to
walk away.
The guy says, "Hey, what about my three wishes?" The leprechaun
asks, "How old are you me boy?"
"25," he says.
"Aren't you a bit too old to still be believin' in leprechauns?"