The Man Mate!

Regency Square was a company located in North Hollywood that offered nifty novelty undies such as #105 Scuttles, and for MEN OF ACTION there was model #207 the Brief Zip.  These ads were sure to get attention in magazines of the late 1960s. 

Youngblood


Rob Lowe was the main star in the 1986 movie Youngblood which featured shots of him wearing only a jock strap. In this movie, it's a gritty, sweaty world filled with sportsmen who pressure their bros to accept their place in the team pack.  Homosexual tensions collide with locker room 'horseplay' when Lowe's new teammates decide "Let's shave his balls!" as something of a hazing ritual they sorta just thought up.  So they hold him down and have a good time playing with his nut sack as they shave his balls, using a straight razor with Patrick Swayze wearing a (clean?) jock strap as if it were a surgical mask.  Who would have thought that a few decades into the future, locker room showers would be filled with macho sportsmen parading about with their hairless dicks and balls?
 
Also, who could have imagined that the dependable mesh jockstrap would also go the way of cock-fashion and be replaced with compression boxer shorts?   Unless there is a built-in pouch, compression shorts typically squeeze (hence the name compression) the balls and penis tightly to the body.  And when there is no padding of pubic hair that also provides air flow down there, the condition of "jock itch" has lots more opportunities to grow.
But everything old eventually becomes new again, and while hairless cocks are still common sites in locker rooms all over the country, old-style jock straps have been making something of a comeback.  Especially in basketball and track, professional sportsmen are rediscovering the freedom of movement and lack of contained sweat that traditional jocks offer.   Add that new straps come in fashion colors galore as well as fabrics, and it's a winner for the wiener!