Basically when I straighten my legs they still looks slightly bent, I have been told it could me having tight quads or hamstrings but I am not sure.
I have the same problem Mine are like a cowboy who just got of a horse lol.
I Trip a lot. Its called bowlegged sometimes if its deformed you should go to the Dr. It might be a disease thats causing the legs to curve look this up it might give you more info. http://www.encyclopedia.com/topic/bowlegs.aspx I
Everyone has a slight bend to their legs - some more than others. Its completely normal as long as its not severe or causing problems with you walking.