I rediscovered this hilarious meme on Twitter today. You may remember it from years ago. It features a group of players discussing a battle strategy in World of Warcraft when one of their number (Leeroy Jenkins) suddenly decides to go straight into battle, leaving the others standing, yelling the line:
“Let’s do this, Leeeeeeeeeroy Jenkins!”
Here’s the video, enjoy! (Warning: includes the F word and similar)
Video by pj007101
A full description of this meme can be found on Wikipedia.