Do you remember in elementary school when you used to do the inch worm? Or maybe you still do it now as part of a work out. It's where you walk your feet up to your hands and then walk your hands out until you are in the plank position.
This is what Lauren does these days in her attempt to crawl. She just hasn't figured out the hands part. She also doesn't quite realize that she should be doing this on her knees instead of with her feet. I guess she has the whole one foot in front of the other one thing figured out for walking.