How do you explain birth to a 2 year old using the back of an envelope?

My wife and I are due our second baby in March. Some of the literature we have been reading recommended drawing pictures to show how the baby is inside the womb. This is supposed to communicate that it is this baby in the womb that will be coming back from the hospital. The goal is to reduce the level of shock the eldest child will experience during what is known as 'dethronement' - when they are no longer the Number 1 in the house. Well, I drew the diagram (above), and we explained it all. I even used arrows, as you can see. It was these arrows that cracked me up, at the absurdity of the diagram. I especially like the baby up in the left-hand corner. When drawing the diagram I asked my daughter, where the baby was. She pointed here, so I drew the baby in. I figured that she might know something tha I didn't - having been born not so long ago herself! So it got me thinking...what is the strangest thing you have written/drawn/seen/read on the back on an envelope? If you have a picture, email it, and I will post it here. Until next time...