I think my mom just very recently (that is, when I told her I'm not really a girl) understood why I, as a kid:
- totally refused to brush my long hair
- put holes in all my jeans
- took about a week to destroy my new shiny shoes
- sat with my legs open
- spoke loudly
- got into fights with the kids at school
- ran around like a madman with toy swords
- hated doing the dishes but loved helping out my dad fixing stuff around the house
- always needed to prove I was just as strong as my brother
- etc... etc...
Of course this is all very stereotypical, 'cause as some of you have pointed out, kids just like what they like and do what they do, right? Who's to say what's boyish or girly? To my parent's though, all of the above was not girly, so much is clear...
Anyway, she did not (thank G*D!!) try to convince me what a girly girl I once was, probably because I really wasn't, but instead she seemed really relieved... Like we finally solved the big mystery of 'me'... (

)
Bit of an anticlimax if you know how scared I was of telling her...