Coppens
A wierdly spelled Polish name (usually last). It was spelled Copens, but some ancestors decided they'd be "funny" and changed it to Coppens. It confuses everyone a whole bunch because it's pronounced cope-pens. But people almost always pronounce it as cop-pens, as it is spelled like that, but it's not pronounced like that. It gets really annoying when day after day, someone doesn't pronounce your last name correctly. Then after they fail miserably at saying your last name, you have to correct them.
Guy 1: Hello, Bob Coppens.

Guy 2: NOOOO!!!!!! GOD!!!!! IT'S COPPENS!!!!!!!!! GET IT RIGHT, WOULD YOU????!?!?!?!?!