Originally Posted by Stratford:
“Our argument is that he is arrogant and rude as he rudely talks during Kevin's lesson.
QED.”
QED is a Latin acronym, it implies that something has been proved beyond doubt. What you have presented here is an opinion. One opinion. Not sure who you think you're representing when you say "Our argument", but as a collective you need a new spokesperson. As arguments go, it needs a little work.
I must say have never seen Colin being actively insulting, and I did actually see the encounter you refer to. Kevin was rightly a little peeved that Colin and Tara were talking over him, but I don't see that this equates to Colin being "arrogant and rude". Your little group - whoever they may be - need to get together and rethink this QED business.