From HotAir:

He’s in North Carolina when he’s in Virginia.  He thinks Paul Ryan is governor of … one of the states numbered 51 through 57.  He’s not even clear in which century he’s living.  He’s Joe Biden, and he’s one heartbeat away from the Presidency.  Or will he be for long?  The week’s misadventures for Sheriff Joe have some wondering whether he’s medically qualified for the job, and speculation rising anew that the possessor of that hygienic heartbeat may want to find someone else to square off against Paul Ryan in the October debates.