A guy walks into a bar . . . .

Nah, just kidding.

Instead:  A guy walks into a polling place in the District of Columbia during last weeks primary election.  It's the polling place where Eric Holder, Attorney General of the United States, is registered to vote.  Just so we're clear, said guy is decidedly NOT Eric Holder, does not look even slightly like Eric Holder, and most certainly has no identification suggesting that he's Eric Holder.

This was very carefully done. Note that the fellow never says, "I'm Eric Holder." Nor did he actually accept the proffered ballot, let alone vote.

Don't worry.  Nothing to see here.  Move along.