It may sound like the beginning to a joke, but sometimes the funniest stories are the ones you just can't make up...
This afternoon, I was riding the train. At the first stop, a blind man boarded the train with his seeing eye dog and two children, who appeared to be his son and daughter.
After about a minute on the train, the kids seemed bored and, finally, the boy said to his father, "Wanna play 'I Spy'?"
"No thanks" said the father.