Definition of eppie in US English:

eppie

(also eppy)

noun

British
slang
  • A fit of temper or a tantrum, likened hyperbolically to an epileptic fit; (occasionally literal) an epileptic fit. [Sometimes considered offensive.]

Origin

1980s; earliest use found in The Guardian. Shortened from epileptic.

Pronunciation

eppie

/ˈɛpi/