My Lunch Stash

I know I shouldn't, but every time someone brings cookies to work, I grab an extra one and hide it in my desk. It's like a mini-adventure each day, sneaking around to find the best spot. My coworkers must think I'm being super responsible with that Tupperware box full of my lunch leftovers! Is this just me overthinking or is anyone else out there secretly pilfering from the communal snacks? Am I crazy for feeling so guilty about a little cookie?