Your Sister Is NOT A Stool

One night we were playing with Lucy and Molly in our family room. Molly was crawling on the floor between the couch and ottoman and Lucy was trying to get on the couch. Molly was in her way, so Lucy proceeded to put her foot on Molly's back to try and use her as a step stool to get to the couch. We saw this happening and stopped Lucy as soon as we could, so as to not hurt Molly. We laughed after we heard ourselves saying, "Lucy, Molly is your sister, not a stool." Oh my!