few sandwiches short of a picnic
Meaning
a few sandwiches short of a picnic
(idiomatic) Exhibiting disquiet or unsoundness of mind; not sane; mad.
Synonyms: see Thesaurus:insane
I think the lady down the road is a few sandwiches short of a picnic—you often hear strange bangings at odd hours in the morning.
Synonyms
one brick short of a full load
few cards shy of a full deck
one fry short of a Happy Meal
a few fries short of a Happy Meal
a few spanners short of a tool box
one card shy of a full deck
a few clowns short of a circus
his driveway doesn't go all the way to the road
one's elevator doesn't go all the way to the top
a few cents short of a dollar