BPB Jr. and I were in the grocery store back when he was little. This was when The Thundercats were the big cartoon craze. Liono had his sword of thundera and every time he was in trouble and about to get his ass kicked by a bad guy he would yell "Sword of Thundera, come to my hand". Well. Stephen was riding in the cart with his sword of Thundera and dropped it and screamed at the top of his lungs "Sword of Thundera come on my hand"
I don't mortify but it was definitely a tee hee moment.
Seth, at the age of 5, came out of the bathroom at Disney World, surrounded by hundreds of people, pulled his hands out of the back of his pants, smelled his fingers and declared in a booming voice "Hmmmm... this stinky smells good!" Again, I was not bothered in fact I found it hilarious but it's safe to use the word mortified to describe squinney I think.