From WD-40 (water displacement, 40th attempt) to Yahoo (Yet Another Hierarchical Official Oracle) these are 25 abbreviations and acronyms you’ve always wondered about.
TASER

Stands for Thomas A Swift Electric Rifle
YAHOO

An acronym for Yet Another Hierarchical Official Oracle
3M

An abbreviation of Minnesota Mining & Manufacturing
M&M's

Stands for Mars & Murrie’s and is named after Forrest Mars and Bruce Murrie who started producing M&M’s exclusively for the military during WWII.
Q-tips

The Q stands for quality.
BMW

An acronym for Bavarian Motor Works.
SMART Car

The SMART car began as a project between Swatch and Mercedes hence it was originally code named the Swatch & Mercedes Art Car.
ASICS

The name of this Japanese athletic equipment manufacturer is derived from the Latin phrase Anima Sana In Corpore Sano which means a sound mind in a sound body.
ADIDAS

Although there are many rumors about where the company got its name, the truth is that it came from it’s founder, Adolf (Adi) Dassler.
TCBY

Now means The Country’s Best Yogurt but it originally meant This Can’t Be Yogurt. They changed the name after being sued by a rival company called I Can’t Believe It’s Yogurt
PAM

Means Product of Arthur Meyerhoff
K-Mart

The K stands for founder Sebastian S Kresge
YKK

The abbreviation on almost every zipper in the world stands for Yoshida Kogyo Kabushikikaisha which is a Japanese manufacturing company.
ZIP code

The ZIP is for Zone Improvement Plan
GEICO

Originally it was short for Government Employees Insurance Company
CVS

Once upon a time it stood for Consumer Value Stores
H&M

The Swedish clothing retailer was initially name Hennes, which in Swedish means “for her”. When it added a men’s line of clothing the name changed to Hennes & Mauritz.
WD-40

It means Water Deplacement 40th Attempt
NABISCO

Means National Biscuit Company
WI-FI

Stands for Wireless Fidelity
Re (in emails)

It actually originally meant “regarding” and not “reply”
IMAX

Stands for Image Maximum
RADAR

Stand for Radio Detection and Ranging
Canola

Stands for Canadian Oil, Low Acid
USA PATRIOT ACT

Possibly the most unnecessary acronym ever devised it stands for Uniting & Strengthening America by Providing Appropriate Tools Required to Intercept & Obstruct Terrorism