An old English saying that generally means someone who "Isn't quite there" or is slightly loopy or crazy.

Another sayings similar to this are: "One sandwich away from being a picnic"
-boy pretending to play Halo in the middle of the lunch area and is rolling around pretending to shoot people-

My friend: "I wanna punch him!"
Me: "Nah man don't, he's not the full quid"


My friend: "Why is he talking to that pole?"
Me: "Because, he's not the full quid"
by Blystical April 20, 2010
Used to describe an unintelligent or somewhat dim-witted individual.
That bitch is seriously not the the full quid ayyy.
by markuz June 29, 2005