First impressions are important in the workplace. If you come off as a quirky weirdo on your first day, it's a tough trope to live down, but innocent awkwardness is to be expected. But sometimes coworkers can sense when someone is more than just a little 'quirky'. In fact, for some new hires, it's pretty clear right off the bat that you're never going to get along… fundamentally. Especially if that dicey, new hire acts like a total creep from the moment they first shake your hand.