It means you are a girl...
Seriously, though, it's a girl thing. Those wider hips we develop and all the other mechanical stuff that comes along at puberty tend to push us into more hip internal rotation than men get.
So, our muscles and connective structures tighten up to match that "habitual" internally rotated position.
If you don't have hip, knee, ankle, or foot issues; and if it doesn't mess up your bike fit, then don't worry too much.
I *did* have problems, so I taught myself to sit tailor-fashion (crossed and bent legs in front of me, on the floor) to stretch myself into external rotation. (cuz I don't exercise or stretch, dontcha know! but I will watch a TV show in tailor-sit)
Edit: BTW, do stretch those hip flexors! And it might not hurt to stretch your hips into external rotation, depending how tight/dysfunctional they are.
Edit Number Two: in the non-PC days of my youth many decades ago, we called the tailor-sit position "sitting Indian style". If those two phrases don't bring up the image of the sitting position, I'll try to describe it better.
Last edited by KnottedYet; 03-07-2008 at 08:25 PM.
"If Americans want to live the American Dream, they should go to Denmark." - Richard Wilkinson