Heres a great one I got from Cacksy

DEAR SON,

Just a few lines to let you know I'm still alive. I'm writing this letter slow cause i know you can't read fast. You won't know the house when you get home because we have moved.
About your father, he has a lovely new job. He has 500men under him;he cuts the grass at the cemetary.

There was a washing machine in the new house when we moved in but it hasn't been working too good. Last week i put dad's shirt in,pulled the chain and haven't seen it since.

Your sister Mary had a baby this morning but i haven't found out if it is a boy or a girl yet, so i don't know if you are an auntie or an uncle.
Your uncle Patrick drowned last week in a vat of whiskey at the Dublin brewery. Some of his workmates tried to save him but he fought them off bravely. They cremated him and it took five days to put out the fire.

I went to the doctor last Thursday and your father came with me.The doctor put a small glass tube in my mouth and told me not to talk for ten minutes. Your father offered to buy it from him.

It only rained twice last week, once for three days and then for four.

We had a letter from the undertaker. He said if the last payment on your grandfather's plot isn't paid within seven days, up he comes.
-Your loving mother.
PS;I was going to send you $10 but i had already sealed the envelope.