'It's a Pain Right in the Butt'

Seems to me Harry Potter might want to get himself an unlisted number.

What's the spell for casting off drunken frat boys?

Every time a new Harry Potter flick comes out, an upstate mailman with the same name has to fight off the forces of evil -- in this case prank callers obsessed with his famed name.

"It's a pain right in the butt," the 64-year-old Scotia man told The Post yesterday. "I think that woman [Potter author J.K.] Rowling owes me big time for what I've been put through. I would like half a percent of the royalties. That's chump change to her."

Potter says that college kids from local schools such as Union College and Rensselaer Polytechnic Institute are constantly downing beers, finding his phone number and making obscene calls early in the a.m.

"They are drunker than skunks, and they call up and they are harassing. They call at 2, 3, 4 in the morning," he said. "When you say to them 'Do you know what time it is?' they start calling you an eff-ing a--hole.' "

Alas, Harry's too frugal to get an unlisted number. He should think twice about that.

He admits that he could stop the harassing calls if he got an unlisted number, but he doesn't want to pay the phone company.

"I don't think it's fair," he said.

Then set the phone straight to voicemail.