#NowTrending: What does WD-40 Stand For?
How random is it that this is trending right now. Like really? Really? I guess something has to!
Per Answers.com: WD-40 means 'Water Displacement - formula 40'. Water Displacement (40th Attempt)
WD-40 stands for Water Displacement, 40th Attempt, because that's how many times it took to perfect the product.