KOREAN SLANG (한국어 슬랭) ~!!

알라븅 - Cute way of saying "I love you"
ㅗ - Middle finger
ㅇㅜㄴ - OTL a shape of person fallen on floor to show disappointment or failure
뭥미 or 뭐임 - What the hell
헉 or 헐 - Expression used in surprise
짱 - Awesome
당근이지 - Of course
방가방가 - Nice to see you
쭉쭉빵빵 - Nice(female) body
왕 싸가지 - King of bastards
ㅇㅇ- Yes
ㅇㅋ - OK
ㄳ / ㄱㅅ - Thank you
ㄱㅊ - It's ok
ㅅㄱ - Keep up the good work or good job
ㅊㅋ - Congratulations
ㅂㅇ /ㅂ2 - Bye. ㅂ2 is also 바이 since 이 is 2 in Sino-Korean numbers. 
ㄴㄴ - No no
ㄷㄷ - 덜덜 means shivering
ㅎㄷㄷ - ?
ㄷㅊ - Shut up
ㅈㄹ - Bull
ㅂㅅ / ㅄ - A highly offensive word meaning idiot or moron
ㅅㅂ - A highly offensive Korean curse word, similar to the F() word
오마이갓 - OMG
쉣트 - Oh
뷁 - ty
귀요미 - Kawaii / cute
귀욤열매 - Cute as holy
안습 - This situation is awkward
굽신굽신 - Please please
쩐다 - To say something is "beyond amazing"
찌질 - Loser
막장 - stupid, a story or something that lacks plot, someone that generally just lacks common sense and is ruthless
하악 - UNF
솔까말 - TBH
정줄놓 - I have let go my sanity
떡실신 - Faint because of something positive 
킹왕짱 - The best
꿀벅지 - Honey thighs
삽질 - Shoveling, referring hard work turning into no good results
대박 - Awesome
엇먹어 - off or a rude form of go away
닥쳐 - Shut up
스릉흔드 - A funny way to say 사랑한다
미친새끼 - Crazy bastard
ㅋㄷㅋㄷㅋ - Mischievous laughter
ㅋㅋㅋ - LOL or kkk
ㅠㅠㅠ - Tears or crying
ㅎㅎㅎ - Softer laugh
닭살이야 - It's gross
썰렁해 - Lame
뻥이야 - Just joking
아싸 - Awesome
돌대가리 - Retard, moron (stronger than 바보)
차다 - To dump a boyfriend or girlfriend
번개(팅) - To meet someone (in real life) that you first got to know over the internet
변태 - A ert
공부벌레; 책벌레; 독서광 - A bookworm
붕어빵 - Used to tell a person they look like someone else
존나 - ing, very (존나춥다! It's ing cold!)
죽을래? - Wanna die?
디카- Digital camera
여친- Girlfriend (from 여자친구)
남친- Boyfriend (from 남자친구) 
얼짱- 'best' looking (as opposed to just 'good' looking)- the most beautiful/handsome person in a given group
쌩얼- A face without makeup
멋져 - Sweet!
킹카 - Hot guy
퀸카 - Hot girl
허당 - Someone who is easily confused
완소 - Completely precious
야동 - A o
꼬맹이 - Kids from toddler’s age to early school years
학교통 - School rebel (the kid who doesn’t listen to the teachers, picks fights a lot…)
양 아치 - Kids who think they are too k00l for sch00l; kids who pick fights, never study, argue with the teacher, chew chewing gum in class… that kind of thing
모범생 - Opposite of a 양아치 – a kid who’s really good at school
싸 가지 - (I don’t actually know what this meaning exactly but it has the feeling of like “retard, idiot, loser”. It’s kind of harsher than those words as well)
꼴등 - Dead last
길치 - A person who is hopeless with directions
몸치 - A person who can’t dance
몸짱 - A person with a good body
바람둥이 - A player, a guy who dates all the girls
간지교 - A cool guy, a stylish guy
좋으다 - Nice, I like it, I feel good
싫으다 - Dislike, I don't like it
오글오글 - Getting goosebumps because of awkwardness
몸짱 - Person with hot body 
빠순이 - Crazy Fans
간지 - Awesome
뭥미 - WTF?
초딩 - Elementary School Kid / Childish
멘붕 - Mental Breakdown 
안물 - Didn't ask
말많다 - You have many words