[So today I bought chocolate. It was the shape of the letter R (first letter of my name.) I feel alot of different emotions right now.] Spoiler
It's like a pre-emptive "I so called it," only on the internets. One of the many devices of those who want to tell an old joke but don't actually want to be seen telling an old joke. Kind of like metajoking. Or, in Snorlax's case, because riffing off good jokes is fun! :D