An old guy's car collides with a young guy's car and both are demolished. The two crawl out of the wreckage, amazed that neither of them was hurt in the accident.
The old guy says, "Look at this miracle! This must surely be a sign from God that we should meet and be friends and live our lives in peace for the rest of our days."
"Sure," says the young guy, convinced the old man is crazy.
"And look at this!" says the old guy, reaching back into his car. "A miracle! My car is demolished, but this bottle of 12-year-old Scotch didn't break. Surely God wants us to drink and celebrate our good fortune."
Again the young guy agrees, so the old guy opens the bottle and passes it to him. The young guy smiles and takes several huge swigs, then tries to hand it to the old guy, who, to his surprise, refuses. "Aren't you having any?" asks the young guy.
"No, thanks," replies the old guy. "I'll wait for the police."