Timmy

Timmy (Full name Timmy Nestor) is a bit that revolves around a quiet little boy.

Origin
Timmy is a character from a sketch written by comedic genius Matt Colozzo. The sketch is named "Dad's Apartment," which features the hilarious antics of Timmy and his father.

Full Sketch
The full script of the sketch goes as follows:

Dad: Timmy! Dinner’s Ready!

Timmy

The bit arose from the fact that the sketch was left unfinished right after Timmy was about to speak. The mythos surrounding Timmy suggests that Timmy T-poses after his dad talks to him.