Reality

Work late today, but not because I needed to, but because I didn't wanna be protrayed as a slack worker.

Anyway the story began when a colleague who was rather free asked to join for tea break. My workload was manageable, so I thought why not. Took a walk to the pantry with another friend to join her. Sat down and saw the papers on the table, so we took it up and read. Apparently our presence and actions drawn displeased response, so when I left the pantry for a moment to my desk, a colleague stopped me and conveyed the response. So after relaying the message to the other 2, we left the pantry after a short 5 minutes' break.

Firstly, I admit we were probably wrong to openly have our break and read the newspaper in the pantry. Ignorance.
Secondly, our volume could have been a factor as my colleague did have a loud voice.
Thirdly, it may have been 'cause of the meeting that was just taking place in the room beside the pantry. Not sure who were in there, might have been someone high ranking.

Conclusion, don't be open about your workload, meaning don't show that you are unoccupied. Even if it is because you are a fast worker. I guess it just pisses some people off that they can't finish their work.
Act busy at all possible times. Stay at your desk and stare at your inbox, respond in the shortest possible time. Even if it doesn't promote much efficiency. Anyway you never know who's a backstabber to notice the slightest instance that you are not at work and wrings you by the neck with it.

That's reality and I learnt it the hard way.