General Info Edit
Jeffy Jeffy, or shortly Jeffy is a character from the SuperMarioLogan plush series. He is known for his mental retardation and his term Whyyy???, he bothers his "daddy" Mario in almost every episode of the series he appears in. He has a pencil shoved halfway up his nose and has a bad habit of spanking his diaper. He also like to put his pee pee in a Cheerio box.
Jeffy originated in SuperMarioLogan in Mario The Babysitter! as he is portrayed to be a highly retarded kid. He is widely known as an internet meme.
"Hey, my name is Jeffy, see? It says it on my shirt, Jeff-y."
"You wanna see my pencil"