Original Scene & Cultural Context

Scene in the Original Work:

In Part 2 of JoJo's Bizarre Adventure (Battle Tendency), after Caesar is killed by Wamuu, his teacher Lisa Lisa tries to look calm. Joseph notices that her cigarette is upside down and says this.
日本語で読む
『ジョジョの奇妙な冒険』第2部「戦闘潮流」。シーザーがワムウに倒されたあと、師のリサリサは平静をよそおうが、たばこが逆さになっていることにジョセフが気づき、こう言う。

Cultural Context:

JoJo's Bizarre Adventure is a manga by Hirohiko Araki that began in Weekly Shonen Jump in 1987. Lisa Lisa trained both Joseph and Caesar. The line has its own entries in Pixiv Encyclopedia and Niconico Pedia.
日本語で読む
『ジョジョの奇妙な冒険』は荒木飛呂彦の漫画で、1987年に週刊少年ジャンプで連載が始まった。リサリサはジョセフとシーザーの師匠。このセリフは、ピクシブ百科事典やニコニコ大百科にも項目がある。

Grammar & Learning Points

Grammar Point

•「先生」= teacher; used as a title after a name. •「たばこ」= cigarette. •「逆さ」= upside down, the wrong way round. •「〜だぜ」= rough, casual masculine ending.
日本語で読む
•「先生」は名前のあとにつける敬称にもなる。•「逆さ」は上下や向きが反対になっていること。•「〜だぜ」はくだけた男っぽい言い方。

Trap for English Speakers

逆さ means upside down or the wrong way round. For clothes worn inside out, say 裏返し; for clothes worn back to front, say 前後ろ反対.
日本語で読む
「逆さ」は上下や向きが反対のこと。服の裏表が反対なら「裏返し」、前とうしろが反対なら「前後ろ反対」と言う。

Example

Example 1Basic Example

  1. ふられたのに「全然平気」と笑う先輩に、喫煙所で後輩が「先輩 たばこ逆さだぜ」とそっと声をかけた。

    My senior got dumped but kept laughing that he was totally fine. In the smoking area, a junior quietly said, "Hey, your cigarette's upside down."

Example 2Applied Example

  1. (「全然緊張してない」と言いながら式場に入る兄に、弟が)兄ちゃん、ネクタイ逆さだぜ。

    (To his brother, who says he's not nervous at all as he walks into the wedding hall) "Bro, your tie's upside down."

Quick check

Meaning

What does 「リサリサ先生 たばこ逆さだぜ」 mean?

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