Ikabod
Any first name that is the same as the last name; Peter Peters, Mike Micheals, Bill Williams...you get the idea.
Any name that sounds obscene when said together; Harry Balls, Mike Hunt, Dick Longdong...you get the idea.
Any dynasy names; John Paul the 83rd! This guarantees an a** kicking all through grade school!
Any gender-bender names; Leslie, Billy, Pat, Mickey. I know I'll catch heat for this one but kids are confused enough without this burden! Maverick.... Who wanted to name any male child Savage Maverick. The wife wanted Vinny. I told her me would name him Savage Maverick but call him Vinny...he'd just be confused!