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The discerningly astute Revenoor, from the great southwest, sent this one...

The mother-in-law arrives home from shopping to find her son-in-law, Paddy,
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 Joe Murphy in our marital bed!
This is unforgivable! The end of our marriage. I'm done. I'm leaving forever!"

"Ah 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.

"Paddy, there I told you there must be a simple explanation… She never
got your email!"
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