A panic knife is, you rounding a corner and your enemy rounding the same corner from the other side -- with both players popping up on each other's screen at the same time, and you ACCIDENTALLY hitting the knife button in surprise.
LOL!
So in each of your montage clips, you think the player knifed by accident? Labelling stuff as 'panic knifing' is the common equivilent to the people who blame every lost gun fight on lag.