Definition

An expression of disgust or strong disapproval; a shortened form of 'gag me with a spoon.' Used to indicate something is so offensive or repulsive it makes you want to vomit.

Example Usage

Gag me, that outfit is hideous!

Origin

From the physical gagging reflex; the 'with a spoon' variant became a 1980s Valley girl phrase.

Source: Definition backfill (hailey)