Pulling a Striker is a very common expression in the MMORPG called RuneScape, It means that you back stab your friend just to get some pixelated items.

On a side note, if you ever see someone in RuneScape called Striker796, trying to join your clan, decline him immediately.
A situation where Jim Pulled a Striker

John: I'm so freaking mad
Jane: Why?
John: Because Jim pulled a Striker at me again!
Jane: Let's beat him up
Jane: Too many people are pulling a striker now,
by Striker hater June 20, 2007
Get the pulling a striker mug.