Big Questions - Trivia, Quizzes, and Brain Teasers | Mental Floss

The Reason You Should Never Spread Rock Salt on Concrete Driveways

Rock salt can damage concrete driveways.

The Reason You Should Never Spread Rock Salt on Concrete Driveways

How Are Porta Potties Cleaned?

hkuchera/iStock via Getty Images

How Are Porta Potties Cleaned?

All-Season Tires vs. Snow Tires: What's the Difference?

Snow tires can help you get a grip on winter weather.

All-Season Tires vs. Snow Tires: What's the Difference?

Where Do Churches Get the Ashes for Ash Wednesday?

Chip Somodevilla/Getty Images

Where Do Churches Get the Ashes for Ash Wednesday?

Blue Collar vs. White Collar Jobs: What’s the Difference?

If they're not sitting at a desk all day, they might be a blue-collar worker.

What's the Difference Between Copyright, Trademark, and Patents?

JLGutierrez/iStock via Getty Images Plus

How Do Potholes Form?

As potholes go, this one is pretty photogenic.

Why Is TV Called the 'Boob Tube'?

"Go play outside!"

What Happens to the Losing Team's Pre-Printed Championship Shirts?

Patrick Mahomes congratulates Tom Brady after Super Bowl LV at Raymond James Stadium on February 07, 2021 in Tampa, Florida.

What Exactly Is White Noise?

A photo you can practically hear.

Vaccination vs. Immunization vs. Inoculation: What's the Difference?

A medical professional does the vaccination; your body does the immunization.

Why Do Quarterbacks Say 'Hut'?

Screaming out "gimme!" just doesn't have the same ring to it.

Are You Legally Required to Shovel Your Sidewalk?

Ken Stewart/Stringer/Getty Images

How Accurate Are Punxsutawney Phil's Groundhog Day Weather Predictions?

“Smells like snow.”

Why Was February Chosen to Celebrate Black History Month?

Vintage illustrations of African-American heroes, including Blanche Kelso Bruce, Frederick Douglass, and Hiram Rhoades Revels, surrounded by scenes of African-American life in the mid-1800s and portraits of Abraham Lincoln, James A. Garfield, and Ulysses S. Grant.

What Exactly Is a Nor’easter?

A satellite image of a nor'easter from March 2018.