How do you pronounce "coupon"?

Youporn.

i pronounces it 'cheap jackass in fronta me wastin my time'

Ku pon.

Aww. I miss kupokupo :(

Who the hell calls it "cue-pin"?!

Coo-pon

With emphasis on the 'cou' (rhymes with poo), then a very short flat 'pon' (northern English accent).

it depends on your accent i say kooo pon

Coo-pahn. I've never heard anyone use the other pronunciations.

"cou-pon"