Zealot Over-neck

In case some of you had hitted the panic button when you were under Cannon rush by your Protoss enemy behind the minerals at 11, then here's a solution.
You don't have to send your Probes to attack that Pylon which has block your way to reach the enemy Probe or that Cannon that is soon hitting your Nexus. Your Zealot can actually "go above the screen" and walk through the enemy Pylon to hit the Cannon. Half of your Zealot body will be unseen in this case.