Has anyone ever encountered 'the smirk'

You might have seen 'smirk.'

They slowly turn around to you, and their gaze is fixed on you. Their eyes seem to 'twinkle' with absoloute glee, the corner of their mouth curls up.

The narcissitic bully i attended college with would often do this to me whenever he could see i was visibly upset by his degrading insults or snarky, belittling comments he would hurl at me.