It's cuz he thought 17 was the age of consent :)

Or maybe the Ghosts know how to remind pedes of the truth about the puppet Pres. on his 81st B-day.

Maybe the message is; the same dude falling up and down staircases, tripping off the stage, who can't form sentences and shits his pants when meeting the Pope is going to be 82-yeas-old, two weeks after the election next fall.

I doubt Joe will be around, let alone running for President.