Oh, yes, yes, yes! Selective deafness and more.

I said to him, "You've got shaving foam in your ear"
He said, "Pardon?"
I said, "You've got shaving foam in your ear."
He said, "WHAT?"
I said, "YOU'VE GOT SHAVING FOAM IN YOUR EAR!"
He said, "Pardon me, I can't hear you. I've got shaving foam in my ear."

And that my friends, truly did happen.