A pair of classic gray sweatpants is trending at Amazon, and they’re on sale for just $20 during Prime Big Deal Days.

Khaki pants (a.k.a. “khakis”) have had an unreliable reputation in their decades of existence. The trousers have reached pinnacles of culture, being called “American classics” and “icons” of menswear.

If there’s anything that can make khaki cool -- and possibly inspire the next viral video dance craze along the way -- it’s the NSJ Crew’s “Khaki Pants,” a humorous riff on the plight of the school ...