I was wrestling on our bed with my 4yo son. As he comes up and takes a running leap at my back, MrsObserver says, 'No sweety. If you're going to attack Daddy from beghind, you have to yell 'Feel My Wrath!' when you do it.
He goes back to the other end of the bed, gets a running start and yells, "Feel My Giraffe!!!"
I nearly peed myself laughing. He won.