It was every businessperson's nightmare.

Arriving at Harv's Metro Car Wash in midtown Wednesday afternoon were two dark-suited IRS agents demanding payment of delinquent taxes. "They were deadly serious, very aggressive, very condescending," says Harv's owner, Aaron Zeff.

The really odd part of this: The letter that was hand-delivered to Zeff's on-site manager showed the amount of money owed to the feds was ... 4 cents.

Inexplicably, penalties and taxes accruing on the debt – stemming from the 2006 tax year – were listed as $202.31, leaving Harv's with an obligation of $202.35.