A teenage boy was playing in his room on his computer when his grandfather came in and sat on the bed. "I know you love your computer," said the grandfather, "but you really should get out of the house more and experience life. After all, you're eighteen now. When I was eighteen, I went to Paris, went to the Moulin Rouge, drank all night, had my way with the dancers, pissed on the barman and left without paying! Now that is how to have a good time!" A week later, the grandfather came to visit ag…