L received a book before K was born about being a big brother. In the story Baby learns to crawl and grabs the boys train engine, this is supposed to indicate that baby is ready to play with the boy. The fact that the baby could take his train engine was a bit traumatic for L but he still looked forward to the day that K his baby could play with him. Well now we have entered a whole new stage of life at our house, settling disputes. K has figured out forward motion, she moves quickly, and trains come in bright colours. K is grabbing his train engines over and over again; like a hurricane moving through the Island of Sodor (the home of Thomas the Tank Engine). I think L has decided that he likes to play with baby but baby shouldn’t play with him.
He is not allowed to physically remove her and he can’t move his trains fast enough so he has resorted to being a barrier.