Waiting for a tunnel

Riding together on a train are Barack Obama, George W. Bush, a little old lady, and a buxom, young blonde girl.

The train goes into a dark tunnel and a few seconds later there is the sound of a loud slap.

When the train emerges from the tunnel, Bush has a bright red hand print on his cheek.

No one speaks.

The old lady thinks, 'Bush must have groped the blonde in the dark and she slapped him.'

The blonde girl thinks, 'Bush must have tried to grope me in the dark, but missed and fondled the old lady and she slapped him.'

Bush thinks, 'Obama must have groped the blonde in the dark. She tried to slap him but missed and got me instead.'

Obama thinks, 'I can't wait for another tunnel, so I can smack Bush again.'