Hard plastic 

Hard plastic 「硬膠」

Vulgar

Used in Hong Kong

derived from the cantonese words "on gau/on9" which sound similiar to hard plastic in cantonese.

Pronunciation: "on-gau" ("on" in English, "9" in Cantonese)

Meaning: stupid, pointless, idiocy ,lame, foolish

Stop being so Hard plastic !!!!
(stop being so foolish)

Person A is hard plastic
(person A is stupid)

Hard plastic by HKslang2011 June 15, 2011

hard shiny plastic

party girls that cant resist the hot boy, and rely on each other when all else fails. theres more to us then youll ever know. were emos, and were bitches. wed rather eat then actually be skinny. we like to save planes and ride air men. we love boys, but know they'll break our hearts. we love life and wouldnt trade these nights we wont remember with friends we'll never forget for ANYTHING.

The definition of hard shiny plastic is emily and kim, and you like it.

hard shiny plastic by emily April 11, 2005