Just returned from A&E with DS 16 months. He was sitting in his Tripp Trapp strapped in but as my IDIOT!!!! husband walked across the kitchen to get DS his tea, DS pushed against the table, put his legs up and pushed backwards tipping the chair up and straight over backwards. He toppled back and slammed his head against the tiled floor He is ok, massive lump and watching him closly but am soooooo cross with DH!!! I have moved the chair to back up against the wall and table so he can't move it, but should this be able to happen??