text: would you find it funny if some one you' ve known at work for 3 years, were to find your keys + move your car?   if i didn't dislike the person, i would think it's very funny - that's something i would do as a joke.  if i didn't know the person well (working together 3 years doesn't necessarily mean anything) or if i didn't care for the person, i would consider it an invasion of my space.