A variety show runs on the cast making each other laugh and then teasing whoever laughed hardest. Today covers the words for finding something funny, 웃겨 (utgyeo) and 빵 터졌어 (ppang teojyeosseo), and the words for teasing and being teased, 장난해? (jangnanhae?) and 놀리지 마 (nolliji ma). By the end you can follow a round of banter and tell a friendly tease from a real complaint.
What the textbook says and what you hear
The left column is correct Korean, but it is not what the cast say when something is funny:
That's funny
Textbook
재미있어요
jaemiisseoyo
What you hear
웃겨
utgyeo
재미있다 is 'fun, interesting': a good book is 재미있어요 without being funny at all. 웃기다 is the word that means 'it makes you laugh'.
I laughed so much
Textbook
많이 웃었어요
mani useosseoyo
What you hear
빵 터졌어
ppang teojyeosseo
빵 is a bang and 터지다 is 'to burst', so the laugh explodes out of you. The plain form 빵 터졌다 is the same thing blurted or written.
Are you joking?
Textbook
농담이에요?
nongdamieyo?
What you hear
장난해?
jangnanhae?
장난해? is not a real question. It means 'are you messing with me?', and said flat it is annoyed, whether the annoyance is real or put on.
Why it works
웃기다 is built from 웃다 'to laugh' with the -기- that makes a verb causative, so it means 'to make someone laugh'. That is why 웃겨 is 'it's funny' and 웃어 is only 'laugh', a slip learners make constantly. The same word has a sour side: 웃기지 마 is 'don't make me laugh', a dismissive 'give me a break' that you should not say to anyone you want to keep. 빵 터졌어 works the other way round, taking a picture of something bursting and letting the laugh stand in for the burst.
Teasing and being teased
These four carry most of the banter between cast members:
놀리지 마
nolliji ma
stop teasing me, don't make fun of me
From 놀리다 'to tease'. -지 마 is the casual 'don't'; to someone older say 놀리지 마세요 (nolliji maseyo).
장난이야
jangnaniya
just kidding
Said straight after a tease to take the sting out, often doubled: 장난이야, 장난. The polite form is 장난이에요.
장난 아니야
jangnan aniya
seriously, no joke
Not about teasing at all: it means 'this is intense'. 추워, 장난 아니야 'it's freezing, seriously'. Very common with friends and on screen.
삐졌어?
ppijyeosseo?
are you sulking?
삐지다 is to go into a small, childish huff. Asked of a friend it is affectionate teasing; asked of someone older it is cheeky.
Why it works
장난 is 'messing about, a prank', so 장난이야 is 'it's messing about' and 장난해? is 'are you doing a prank?'. 장난 아니야 flips it: 'this is no game', which is why it means something is seriously good, bad, hot or difficult. Teasing in Korean is tied closely to closeness and age, because the tease assumes the other person will not take offence. Between friends of the same age it is warm; aimed at someone older it can land as disrespect, even with a smile.
After the fall
Two cast members, both the same age, after one of them fell over during a game:
준호
아까 넘어졌어?
akka neomeojyeosseo?
Did you fall over earlier?
아까 'earlier, a moment ago'. The question is innocent; the grin is not.
수빈
응. 웃지 마.
eung. utji ma.
Yes. Don't laugh.
웃지 마 is from 웃다 'to laugh', with the -지 마 'don't' from 놀리지 마.
준호
미안, 진짜 빵 터졌어.
mian, jinjja ppang teojyeosseo.
Sorry, I honestly cracked up.
진짜 from day 1, used here as 'really, honestly'.
수빈
놀리지 마. 아팠어.
nolliji ma. apasseo.
Stop teasing. It hurt.
준호
장난이야, 장난. 괜찮아?
jangnaniya, jangnan. gwaenchana?
Only joking. Are you OK?
수빈
아니. 나 삐졌어.
ani. na ppijyeosseo.
No. I'm sulking now.
Announcing your own sulk is itself a joke, and a sign that nobody is really hurt.
준호
웃기다, 진짜.
utgida, jinjja.
You're ridiculous, honestly.
The dictionary form 웃기다 used as an exclamation, half to himself: 'you're too funny'.
Why it works
The pattern is the one to listen for on any show: a tease, a protest, a 장난이야 to soften it, and a mock sulk to close. Each step lets both people show they are still on good terms, which is what the audience is really watching. The 반말 throughout is only possible because they are the same age; if 수빈 were older, 준호's first line would already be risky. The last line uses the plain -다 form, which is addressed to nobody, and day 3 comes back to that.