Now this is a Cracker!
As a young lad Paddy asked Grandpa Sullivan, "Grandpa, how did you ever get so old?" "Well," replies the grandfather, "every morning, I pour a teaspoon of gunpowder into my coffee, and I guess that's the reason." So the Paddy begins drinking coffee and doing the same. 90 years pass and Paddy finally dies having reached the age of 102. He left behind 5 kids, 18 grandkids, 43 great grandkids, several million dollars, and a 60 foot hole in the wall of the crematorium.
