A mother-in-law arrives home from shopping to finds her son-in-law Pete in a steaming rage and hurriedly packing his suitcase.

"What happened Paddy?" she asks anxiously.

"What happened?"

I'll tell you what happened! I sent an email to my wife telling her I was coming home today from my fishing trip. I get home... and guess what I found?? Your daughter, my wife Jean, naked with Tim McDurmet in our marital bed! This is unforgivable, the end of our marriage. I'm done. I'm leaving forever! "

"Come now, calm down, calm down Paddy!" says his mother-in-law. "There is something very odd going on here. Jean would never do such a thing! There must be a simple explanation. I'll go speak to her immediately and find out what happened. "

Moments later, the mother-in-law comes back with a big smile. "There now Pete, you see? I told you there must be a simple explanation!""

"Well, WHAT is it?" fumed Pete.

"She never got your E-mail! "