Next morning Bob calls Tim and says, "How are you feeling?"
Tim says he's fine, never felt better.
Bob asks, "Do you have a hangover?" Tim says no.
Then Tim says, "Wow this is great! We can drink all we want and not get a hangover."
Then Bob says, "Well, there is one side effect, Tim. Have you farted yet?"
Tim says, "No, why?"
Bob says, "I'm calling you from Detroit!"