Tomorrow Jake is running the mile at school. He wanted to "warm up" tonight by going for a little run. I agreed and we ran to Target, got some socks for him, and ran back.
Near the end of a run, I always like to sprint a little and Jake knows this so at a certain point he started us on a little sprint. A few steps into it I heard a little "Phht..." from his rear end. Being ever so mature I ignored it. A few steps later I heard it again and then I heard some giggles from my running partner.
When we got home I said, "Jake - you ran so hard you squeezed all the air right out of you!"
Without missing a beat he replied, "I know! It was like my own little jet-propulsion pushing me along!"