not the full quid 

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"

or

My friend: "Why is he talking to that pole?"
Me: "Because, he's not the full quid"

not the full quid by Blystical April 20, 2010

not the full quid 

Used to describe an unintelligent or somewhat dim-witted individual.

That bitch is seriously not the the full quid ayyy.

not the full quid by markuz July 11, 2005