What would you take this to mean??

Okay so I was at work today, I was out in the shopfront rearranging stock and my coworker was behind the counter serving this guy who was probably in his late 40s or early 50s. Apparently he fully watched me as I walked back around to get behind the counter and then turned to my coworker and kinda laughed and said "beauty is pain right" before leaving??

According to Google it means you sacrifice something for your beauty but like I literally look my worst at work 😂 so I don't really get what he was saying? Can anyone explain? Is it meant to be a compliment? It sounded kinda pervy idk

Also didn't know what group to post this in so here we are