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“why?!” · No. 2 of 16 textbook swaps
どうして→なんで→なんでだよ

Same meaning as どうして, and the everyday way to ask “why”. どうして is still right in writing and with bosses or teachers; a bare なんで？ can sound blunt. Comedians stretch it into なんでだよ／なんでやねん for the comeback. Careful: after a noun, なんで can also mean “so, because” (short for なので): 初めてなんで = “since it’s my first time”.

Use it withFriends OKCoworkers OKBoss / teacher careful

Everyday. なんでだよ is a comeback, keep that for friends.

2,186 lines with なんで from 225 comedians in the library · the textbook どうして: 84 · Counts updated 2026-10-07
Audience laughter in this scene0:25
Dacquoise · The ALT Teacher

One performer drums while the other is told to dance the Sōran-bushi and pull on some dreadlocks at the same time.

Culture note Sōran-bushi is a Hokkaido fishermen's folk song, and its dance is often performed at Japanese school events.

The words appear when the audience laughs.

Why does this stretch so much?!

Textbookどうしてこれはこんなに伸びるのですか。'どうして' becomes 'なんで'. 'こんなに' shortens to 'こんな', and '伸びるの' contracts to '伸びんの' (る→ん before の).

Speed: normal
All lines
Audience laughter in this scene0:09
Tartar Kansu · At the Beach

Two people are losing it over something they think is incredibly rare.

Culture note Suikawari is a Japanese summer beach game where a blindfolded person tries to smash a watermelon with a stick.

The words appear when the audience laughs.

Why would we do that, man?!

Textbookどうしてそうなるんですか。Casual 「なんで」 replaces 「どうして」; 「だよ」 adds a pushy plain-form punch, and 「お前」 is a blunt 'you' used between friends.

Tone: Rude (between friends)Speed: normal
All lines
Audience laughter in this scene0:17
Kasai Hochiki · Stranded

Two people are stuck on a mountain after searching for a lost backpack, and one blames the other.

The words appear when the audience laughs.

Why is it getting dark?

Textbookどうして暗くなるのですか。Casual 'なんで' replaces textbook 'どうして', and plain '暗くなるの' drops 'ですか': 'なんで暗くなるの'.

Speed: normal
All lines
Audience laughter in this scene0:20
San San Maru Maru · The Mood-Killing Remark

Two people are buying tickets for an outing, and one says tickets with a printed date become keepsakes.

The words appear when the audience laughs.

Why would you erase them?!

Textbookどうしてこれを消すのですか。Casual 「なんで」 replaces 「どうして」; 「〜のよ」 adds exasperation, and 「これ」 is tacked on after the verb instead of taking 「を」.

Speed: normal
All lines
Audience laughter in this scene0:16
Mamatarte · Game Arcade

Two friends are taking photo-booth sticker pictures, but one is moving around inside a strange homemade shape.

Culture note Purikura are Japanese photo booths that take decorated sticker photos after a countdown.

The words appear when the audience laughs.

Why are you still taking pictures?

Textbookどうしてまだ撮っているのですか。'なんで' is the casual 'why' (textbook 'どうして'); '撮ってる' also drops the 'い' of '撮っている'.

Speed: normal
All lines

More lines with なんで

From other routines in the library. Automatic transcripts, not yet checked line by line.

Quick answers

What does なんで mean?

なんで means “why?!”. Same meaning as どうして, and the everyday way to ask “why”. どうして is still right in writing and with bosses or teachers; a bare なんで？ can sound blunt. Comedians stretch it into なんでだよ／なんでやねん for the comeback. Careful: after a noun, なんで can also mean “so, because” (short for なので): 初めてなんで = “since it’s my first time”.

Is なんで rude? Who can you say it to?

With friends: OK. With coworkers: OK. With a boss or teacher: careful. Everyday. なんでだよ is a comeback, keep that for friends.

なんで or どうして: which do people say more?

In 1,905 live comedy routines, なんで appears in 2,186 lines from 225 comedians, and the textbook どうして in 84 lines.

Sixteen textbook swaps

いや〜てんの？〜じゃない〜んだよ〜ちゃった〜てくんない？〜かよ！〜だろ！〜なきゃ〜みたいな〜でしたっけ？〜ばっかりマジで？〜ちゃダメやばい