First its shoulder peeking, second they have been explaining what it is through out this entire thread. L2 Read. Also are you able to see the target while shoulder peeking? Or do you just crouch behind a box and spray and pray, hoping you hit someone.
Shoulderpeeking IS a glitch, but so many people does it that it can't really be enforced. Deathroom is a perfect example, you crouch behind the box and can see through the box, but can't be hit.
I can't shoulder peekers.
I went 28-0 in sector 25
shoulder peaking ftw
u know when u jump out of spawn
and u go on the stairs
and then theres the center
if u camp at the corner no one can see u
but u can see the whole middle of the map :O