My legendary INFINITE meme, what Sungjong did

Do you remember the line, "When you're deep in thought, it's lemon candy"? It had such a massive impact back then that it was often shown as footage on other variety shows, and it was never left unmentioned whenever Sungjong appeared on variety shows. During its resurgence in popularity, other idols even followed along like a challenge, making me wonder if there was ever anything as famous as that. Though, even INFINITE themselves sometimes struggled with the cringe factor.