An old man lived alone in the country. He wanted to dig his potato
garden but it was very hard work as the ground was hard. His only son
Fred, who used to help him, was in prison. The old man wrote a letter to
his son and described his predicament:

Dear Fred,
I am feeling bad because I won't be able to plant my potato garden this
year.
I'm getting too old to be digging up a garden plot. If you were here,
all my troubles would be over I know you would dig the plot for me.
Love,
Dad

A few days later he received a letter from his son:


Dear Dad,
For heaven's sake, don't dig up that garden! That's where I buried the
BODIES!
Love,
Fred

At 4am the next morning, FBI agents and local police dug up the entire
area without finding any bodies. They apologized to the old man and
left. That same day the old man received another letter from his son:


Dear Dad,
You can plant potatoes now. That's the best I could do under the
circumstances.
Love,
Fred

Maybe "Spuds" McKenzie was driving after having a few too many.