My username Kartik is actually my name- pronounced car - tick
But my more commonly used nickname (in forums, games and such)
is Scope which i aquired when i was 8 y.o. I was playing some shooting game with my cousin and i had a great fasination for sniping and asked what the thing you use to zoom in with was called, he replied "scope" and he just started calling me that, so i used it as well.