another tunnel

Sitting together on a train was Obama , George Bush Jr ., a little old lady, and a young blonde girl with large breasts. 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, Obama has a bright red hand print on his cheek. No one speaks.
The old lady thinks: Obama must have groped the blonde in the dark, and she slapped him.
The blonde girl thinks: Obama must have tried to grope me in the dark, but missed and fondled the old lady and she slapped him.
Obama thinks: Bush must have groped the blonde in the dark. She tried to slap him but missed and got me instead.
George Bush thinks: I can't wait for another tunnel, so I can slap Obama again.