I love the way slang is made in Korean. Take the first syllables of a couple of words and bam, a new word is born.

걸커 (geol-keo)

This word comes form 걸어다니는 커밍아웃, which I would translate as 'he comes out just by walking'. Hilarious. A 걸커 is a gay guy that you can spot from a mile away.

And when you see him, you can call outL

너는 걸커야! (neo-neun geol-keo-ya)

This expression would be similar to the English 'You are so gay'. Not the obtuse homophobic meaning, where gay is synonymous with the lesser, but the 'honey, we can tell you like to suck a dick' reading of 'You are so gay'.