I should die before you

[Blondie]

Pat and Mike had been drinking buddies and friends for years. After having a few drinks in a bar, Mike said to Pat "We have been friends for years and years and if I should die before you do would you do me a favor? Get the best bottle of Irish whiskey you can find and pour it over my grave." Pat replied, "I would be glad to do that for you my old friend. But would you mind if I passed it through my bladder first?"