Coworkers very suspicious of white guy who speaks Mandarin fluently

PHOENIX, AZ- “I was sitting in my cube and then, all of a sudden, I heard him talking in perfect Chinese on the phone. I was like Tommy, dude, you speak Mandarin?” said one deeply concerned coworker.  The revelation has created a strain on the office culture.  Another coworker added, “we went out to lunch and everyone was enjoying themselves when he started talking to the waiter in Mandarin. It was just so…weird. We settled up the tab and got the hell away from him.” Tommy now spends his lunches in quiet solitude, most likely plotting something deeply sinister.