How bout: "Mo-fo, when you drop a slimy one, it leaves a trail. Clean up you dirty f***er or I'll crap in the bath before you use it!" I mean, why beat around the bush? Subtelty doesn't always work. I spent many years working in a large office where one of my colleagues had appalling dental hygiene. I don't know what was going on - it looked like he hadn't brushed his teeth or been to a dentist for years - like looking into the pit of hell any time he yawned. One person eventually bought a tooth-brush at lunch-time and left it anonymously on his desk as a subtle hint. He returned from his break, picked up the toothbrush, announced in a loud voice "Someone has left a toothbrush on my desk" and spent the rest of the afternoon wandering around, speculating loudly as to who the toothbrush could belong to, why it was left on his desk and why the owner didn't want to claim it!