Often when Jonathan is upset about something, his reaction is to go down on feet, hands, and head (can you picture that?) and yell and bang his head. Not very pleasant. BUT Gabe and I are amazing, and have found a truly novel way to circumvent these tantrums. We have taught Jonathan how to go "upside down!" (the same position, only without the head-banging!) and as soon as his head hits the floor, we cry "upside down!" and do the same thing. He thinks it is so funny he forgets what he was upset about.
So if you see me in the grocery store, peeking through my own legs at my son, try not to laugh too hard, ok?