Wembley is one of the characters in Fraggles. He's known to be very indecisive. Wemble is a Fraggleverb and means not being able to decide.
Girl: Would you like pizza or the big salad?
Guy: I don't know. Pizza is tasty, but then again, salad is healthy. I'm hungry, so pizza would be nice. But the salad looks great. Maybe I'll take the salad then. Uh, but I would really like the pizza...
Girl: Don't wemble like a moron. Come on, what do you want?
A person starting to takeinterest in anime, manga, and japanese culture who will later on become a weeaboo.
Weeblet: I've watched Naruto and Attack on Titan!
Veteran Weeb: I've watched every anime, read every manga known to man, attend anime expo every year, have thousands of manga in my collection, and my room is filled with anime merchandise.