When a "straight" man has anal sex with a gay man under the pretense that it is his first time. (see Jim the Nickel) However, is very experiencedin the act.
Harold went home with that guy last night becaue he thought he was getting to Jim the Nickel but found out he ended up with Phil the Half Dollar.
Half dollars are similar to saushers nipples in that they are both relativly large nipples, the only difference is half dollars resemble that of a half dollar with the lines around the center.