you don't understand, do you? This kind of post is out of place, has 'attention seeker' vibe - those that we rarely come across on Lemmy but usually found on Facebook.
Someone took that picture of you. Which means that someone notices you enough to think you're rad.
Anyway if someone was working on Lemmy while at prom, he would be my dream date. I'd rather be on Lemmy than at prom. Let's go to a hotel and stare at our smartphones together.