Running and shooting and actually hitting someone is pure luck. If they are pretty close then well maybe you might have some skills
But running and actually hitting someone in a place that you wanted (AKA the head

) is pure luck.
I remember (for those of you who have CS:S) I was a T and we went through the garage and there was a gay CT awper where you get into the office throught the window. I had an M4A1 and I just sprayed as I moved across the garage opening and I actually got a headshot... My name from there on was "H@X()r!!" lol... just telling a story of my awesome luck