slightly useful

Tired of having your coworkers mysteriously using your coffee cup? Who knows where their mouths have been? The Anti-Theft Cup solution is delightfully useless and utter genius as the same time. The cup comes with a hole in the side that strategically makes whatever liquid your coworker deems worthy of slurping down undrinkable. The only way to make the cup drinking friendly is to insert the specially sized key lock which plugs up the security hole.