I have to tuck my shirt at my wendy's job, but i have a big bulge below the belt?

I work at wendy's, and i would just leave my shirt untucked to hide the bulge, but i got my hours cut down to 10 for that. I feel sooooo self conscious with my shirt tucked. I'm always standing behind my grill post to hide my bulge. I don't understand how no other guy at work has no bulge but i do. I wear really tight compression shorts underneath and long johns, but it still shows. IT's this stupid ****** problem that's ruining my time at work, and i just want to fix it and get it over with.