When have to go, you have to go...
There once were 2 Irishmen, named Shawn and Pat, who were the best of friends. And as a part of being the best of friends, as best friends will do, they spent a lot of time together, at their favorite public house, imbibing. During one particular night of revelry, the 2 agreed that "when one passed on, the other would take and spill the contents of a bottle of fine, Irish wiskey over the grave of fondly missed and recently dead friend". And as fate would have it, Shawn would be the first to pass. Pat, hearing of his friends illness, came to visit his dear friend one last time.
"Shawn", says Pat, "can you hear me?"
Faintly, Shawn speaks back "Yes, Paddy, I can".
Bashfully, Pat starts "Do, do you remember our pact, Shawn?".
"Yes, I do Pat", Shawn strains.
"And, you'll also remember that I was to pour the contents of a fine, old bottle of wiskey over your grave, which we have been saving for, going on 30 years now?", says Pat.
"Yes, Pat, I do", wispers Shawn.
"It's a very *old* bottle now, you know", urges Pat.
"And what are you geting at Pat", replys Shawn, briskly.
"Well, Shawn, when I pour the wiskey over your grave, would you mind if I filter it through my kidneys first?"