one sandwich short of a picnic

one sandwich short of a picnic

A pejorative phrase meaning not very intelligent or of questionable mental capacity. It can appear in many different forms and variations (for example: one card short of a full deck, one brick shy of a full load, etc.). He says he's going to start a business selling bees as pets—I think he may be one sandwich short of a picnic. The new manager is nice enough, but he's one sandwich short of a picnic, if you ask me.
See also: of, one, picnic, sandwich, short

one sandwich short of a picnic

Inf. not very smart; lacking intelligence. (Jocular.) Poor Bob just isn't too bright. He's one sandwich short of a picnic. She's not stupid. Just one sandwich short of a picnic.
See also: of, one, picnic, sandwich, short

one sandwich short of a picnic

INFORMAL
If you say someone is one sandwich short of a picnic, you mean they are stupid or crazy. His daughter confirmed that her father was definitely one sandwich short of a picnic. Note: This expression is very variable. People often replace sandwich and picnic with other nouns, and one with a few. The guy was obviously several cards short of a full deck. Miss Martin is clearly one tent peg short of a full set. Note: These expressions are used humorously.
See also: of, one, picnic, sandwich, short
References in periodicals archive ?
Ordering psychiatric reports, he said: ``This poor defendant is more than one sandwich short of a picnic.