a few fries short of a Happy Meal

a few fries short of a Happy Meal

A pejorative phrase meaning not very intelligent or of questionable mental capacity. It can appear in many different forms and variations (for example: a few bricks shy of a load, a few cards shy of a full deck, etc.). Every time Paul tells me about his latest conspiracy theory, I can't help thinking that he's a few fries short of a Happy Meal.
See also: few, fries, happy, meal, of, short

a few fries short of a Happy Meal

not very intelligent I could tell he was a few fries short of a Happy Meal, but unfortunately you can't arrest someone for being stupid.
Usage notes: this idiom appears in many different forms, including a few cards short of a full deck, a few bricks short of a full load, a few clowns short of a circus, and a few Cokes short of a six-pack, all with the same meaning
See also: few, fries, happy, meal, of, short