How to make sure no one uses your coffee cup

Okay, as cool as this concept is, if you buy one of these and bring it to work, you are a freakin' weirdo. Period.

AdamFromMyspace points out

The hole also doubles as an efficient way to shotgun your coffee

elefaint says

I'm sure you won't look like an idiot with keys dangling from your coffee cup.

thedpshow says

And only the owner of the cup can explain to his wife why there are coffee stains in his pocket.

mordeci warns

This would stop me from drinking out of the cup, wouldn't stop me from peeing in it.

Mizerooskie says

I prefer the attached "I have herpes" note.

KMyHero replies

Until someone shrugs and says "So do I." Then promptly goes kayaking. Yay Valtrex.

LoudMusic hints

Here's an idea. Keep your cup in your desk!

WHOA!