Maybe guys hold their woman's hands at the mall to drag the women past things the guy doesn't think she needs to spend his (their) money on. More likely it enables him to make the quick exit when he decides it's time to go, instead of spending an hour looking for her when he's done looking at the tools and stuff. Backing into the parking space, if possible, is also conducive to making a quick getaway.
This is the look I give her when she stops at shops that don't interest me. And this is the reaction of when I'm in the tools section or the fishing section.
Yea, I agree with to keep her hands out of your pockets. My girl is crazy in the mall always going in every store. It's annoying at times.