It grinds my gears when people see my last name and feel compelled to make some kind of joke or comment, as if they were the first people to ever think of it. At my job I sign for packages, so I'm constantly spelling it out to delivery drivers. Some pizza places think we're prank calling and won't take my family's order.
It's Money. M-O-N-E-Y. Yes, I'm aware my name is unusual. Yes, I've heard of Eddie Money(his real last name is Mooney). No I don't like his music. No I don't have any money. No, my child's name will not be "Cash." No, I'm not really laughing at your joke. Yes, I'm mind-stabbing you with your pen right now.
On a lighter note, since it is a fairly unusual name, I've accidentally happened upon relatives I never knew I had, and met delivery drivers who grew up with my Dad and uncles.