Like, the specific act of smiling with your mouth open = SUPER feminine/not masculine somehow?
It's the most arbitrary shit, I swear. lol
It was literally just made up out of thin air by chuds desperate to feel manly without actually having to do anything.
It's because they're upset about their own anhedonia. They saw people they didn't like being happy about stuff they found silly, so they created a meme about it. It's hard to be excited over stuff when all you do is sit inside and browse 4chan.