Yo's First Stand

(As you can see, I'm obviously running out of steam when it comes to thinking up creative titles. "Custer's Last Stand" came to mind during the time of topic-pondering, and that may or may not be relevant to the subject under discussion).

Yo has just started to stand by himself for a few seconds before toppling over. He typically goes about it in this order:

1. Pull himself up to examine something of interest on a chair. At this point he's standing holding on to aforementioned chair.
2. Pick up said object of interest from the chair with one hand, using the other to continue to hold himself up.
3. Release second hand from chair to more closely examine the object of interest, at which point he's standing by himself.
4. In a few seconds, all balance is lost and both boy and object of interest meet the floor.