I wouldn’t worry.  I myself didn’t walk until I’d put everything on the floor in my mouth.  even then, my right leg would sometimes fill with my left.  dad would warn me about bumping my head and mom would remind me to make him hungry.  anyway, I told your kid I don’t know how to read but the truth is reading makes me want to see two women fight.  I blame my brother.  some people have the attention span of satan.