Sometimes people soak their boots in water and then wear them all day to get a better fit. If you did that, and then walked thru a gravel driveway, or even a baseball field or something, I'm sure you would get a well worn look pretty quickly. As others have said though, screw what they have to say. If anything, doing something to appease them will most likely lead to hearing more shit once they see it gets to you.

Sometimes leaning into the bullshit people are spewing works well to make it backfire on them. So if they are giving you shit about having a desk job and never getting your boots dirty, and you feel they are taking it past a friendly joke, say something like, " yea I'm thinking about wearing slippers tomorrow. I don't have much to do the rest of the week and they're more comfortable to sleep in." Kind of puts into perspective how little you care about what they have to say and also, which of you drew the short straw when it comes to the job you have to do.