What do you mean by "break over the sides"?

"katy" wrote
I don't always wear socks in my canvas shoes...heck, you can just throw
them in the wash with some bleach if they get woofy...I know what you mean
about the support thing with topsiders...those shoes weren't made for
walking, that's for sure...another reason why I go with the canvas deck
shoes..they have some support and because they're lace up I don't break
them over the sides (I tend to sit pigeon-toed...penny loafers break over
the sides, too...)