guys! did you hear about the new particle? / its called an "electron"
A Slowpoke meme.
Slowpoke is the Pokémon, a pink sleepy creature with a blank stare, known for reacting to things long after they happen. Captions describe being the last to catch on to news, jokes or obvious facts, and usually start with the event and end with a delayed "hey guys, did you know..." It's the meme for slow reactions and old news.