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Make things move that should and don't. The opposite of Duct Tape.
by Ritch A September 16, 2003
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2
A term used when you at the club and I'll you drinking is fortys! *We drinking 40* (wd40)
Yo..what we drinking at the club tonight?
Boy: man WD40 my man all night!
by Hom2436 January 24, 2018
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3
The opposite of duct tape.

Like matter and anti-matter, these 2 must never be brought in contact or the universe will be destroyed.

WD Stands for Water Displacement and it took the developers 40 attempts to get a formula which worked. Convair, an aerospace contractor, first used WD-40 to protect the outer skin of the Atlas Missile from rust and corrosion.
This bolt is stuck, better squirt some WD-40 in to it.
by fubarderby January 04, 2005
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4
Ze Lifeforce. WD 40 is the multipurpose lubricant in a can. It can be purchased in a vast array of sizes, from the small home-use bottle to massive industrial size. Recommended for anything that doesn't move, but should, not recommended for use as a cooking spray. Also handy for fine tuning flame thrower abilities.
"The Cheat! Bring me my WD40! And a Danish!"
by Steven Hawking February 14, 2004
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5
An oily household lubricant. abbrev: "water displacement 40th formulation"
Use the WD-40 on the squeaky door
by ASTVision August 11, 2003
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6
WD-40 was origionally developed by the Rocket Chemicals Company in 1953. The name means Wated Displacement 40 (40 is the formula number). It was first used in air and space applications such as the Atlas Missile. It is primarily made up of various petrolium products and mineral spirits. Just like duct tape, it is a cornerstone of the average man's life. Also like duct tape, it has an uncountable number of uses. It is primarily used to lubricate and clean metal while also preventing corrosion and rust.

WD-40 is easily recognized by its blue and yellow can with the red cap. It comes with a little red straw that is stuck into the nozzle to help direct the spray. Recently, to combat the inconvieniece of the straw, WD-40 released a new design with an attatched straw on a hinge to increase ease of use.
If it is stuck, tight, rusty or dirty, use some WD-40 on it. It is the opposite of duct tape in that it makes things unstuck. Like duct tape, it is cheap and avaliable everywhere. It is a must for the handyman.
by northendwhitetrash August 04, 2008
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Genesis of WD-40 "Water Displacement 40th attempt. Successful" As stated years ago by a representative of the manufacturer on CNBC. Comes directly from the procedural notes of the experimenters and how they referred to the final formula, which indeed does displace and protect against moisture.
Apparently the previous 39 formula attempts were not charted as successful.
City dwellers rely on Duct Tape & WD 40,
ranchers rely on Barbed Wire & Spit.
by Brandli April 22, 2007
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