Running joke on the albums produced by surreal comic troupe The Firesign Theater. One character will make a statement and another character, barely audible in the background, will chime in "Me too!". The result is a total non sequitur:

PICO: Yeah, and tonight's the planting moon, so alla them's gonna be out wading in the rice paddies.

ALVARADO: Me too!

A bit I always find hilariously funny, which is why I keep saying it in the Chatterbox. :)