Sweaty Underwear Fetish

I usually go to the gym at lunchtime, and when I return I spread my damp gym gear out to dry on my gym bag, discreetly behind my desk and between me and the wall.

Today, when I got to the gym, I discovered that my gym underwear was missing. This was the second time that this has happened this year. Someone in my office is stealing my fucking sweaty underwear.

I just don't even know where to begin with this.