Because that's how my Mother did it

Once upon a time a man was sent to the store for a ham.

After he bought it, his wife asked him why he didn't have the butcher cut off the end of the ham.

"But why do you want to cut the end of the ham off?", he asked. She replied that her mother had always done it that way and that was reason enough for her.

Since the wife's mother was visiting, they asked her why she always cut off the end of the ham. Mother replied that this was the way her mother did it.

Mother, daughter and husband then decided to call grandmother and solve this three-generation mystery.

Grandmother promptly replied that she cut the end of the ham off because her roaster was too small to cook it in one piece.