'what is knn and ccb?'

My highlight of the day has got to be what my colleague, K accidentally wrote to my boss.

This morning, K wanted to complain to another colleague something about boss when he was not around. However, he accidentally clicked on boss' name in our messenger and send a message to him which goes somewhat like this.

K : 'knn...why he itchy hands go and tilt the tv. ccb'

Back came a reply from boss and told K that he could tilt the TV back to the original position. Lastly. he asked K, 'what is knn and ccb?'