My 1 yr-old boy has started going up to (usually older) children in the sandpit or in the park & hugging them...Because he's not 100% steady on his feet he usually topples over on top of them & they end up in a heap. Reactions from the other child range from bemusement to tears, depending on their age. There is absolutely no malice or thuggery involved on the part of my son, but I do find I'm apologising every 5 minutes. Should I worry or be embarrassed about it? Does anyone have any idea how I can deal with it?