Back a long time ago, go-go boys wore t-backs. And shaved all the way up to the tanline. And made sure their hair looked great.
From pictures I've seen lately, they're wearing just their underwear. And it looks like they showed up at the place, yawned, and said "I guess it's time to go to work" and took off their pants, wearing what they always wear. Then, they slouched out to their boy box.
"You know, when I was a kid, 'go-go boy' used to MEAN something...."