One slob, 5 mugs

Ok, listen up fuck stain. Just cause you are the last one in the office, does not mean you can flagrantly disregard common courtesy and plop your stinking, FESTERING, mugs into the sink.

You know how I know this was the work of one asshole? Forensic slobology my friends. Look at the cascading pattern of mug handles. Clearly those were placed down by one person, judging by the vector of each handle. And, upon measuring the vertices created by said handles, one can deduce that the perpetrator is predominantly right handed. Also fuck face, you had the nerve to put that top "lone wolf" in the sink, 1/4 filled and with a conflicting angle handle for the left hand... unless you put it down first. Clearly this was a premeditated violation of cleanliness.