あいつ, こいつ, そいつ and どいつ are casual words for people: “that guy”, “this guy”, “that one (you mentioned)”, “which one”. They replace あの人, この人, その人 and どの人. Between friends they can sound friendly; about strangers or superiors they sound rude.
Casual to rough. Can sound warm between close friends; rude about someone you should respect.
One performer asks the audience to imagine being picked for Japan's national team and playing at Saitama Stadium.
Culture note Saitama Stadium is a big soccer stadium where Japan's national team plays, and Brazil is famous for soccer training.
...that guy is back!
Textbookあの人が帰ってきました。"あの人" becomes the rougher "あいつ"; here it is hype, like a sports commentator's "that guy".
A senior detective, apparently badly hurt, talks about the end, and their junior partner begs them not to say such things.
What is with this guy!
Textbookこの人は一体何なんですか。「この人」 → 「こいつ」, the 「こ」 ("this") version of 「あいつ」; 「何なん」 is Kansai-style 「何なの」.
One character orders the other to go buy cigarettes and coffee right away.
Today's the day those guys...
Textbook今日こそ、あの人たちを捕まえますからね。"あの人たち" becomes rough "あいつら", with plural "ら"; the sentence continues into line 7.
Arguing about something that moved strangely in the sky, one performer says UFO while the other claims it was a conductor.
See, on the other side of this guy, there's this other guy.
Textbookこの人の向こう側にはですね、この人がいるんですよ。「この人」 → 「こいつ」, the "this" version of 「あいつ」; also Kansai 「おる」 for 「いる」 and 「んよ」 for 「んだよ」.
In a routine about dieting, the performer argues about what counts as normal and compares it to something very 'high.'
You'll just end up the same as that super-high guy.
Textbookとても高いあの人と同じになるだけですよ。"あの人" becomes rough "あいつ". Also casual "すごい高い" for "すごく高い", and "一緒" for "同じ".
Someone hoping to win over a niece is putting on a strange, cutesy act, and the other performer can't follow what's happening.
What has this guy been doing this whole time?
Textbookこの人はずっと何をしているんですか。「この人」 → 「こいつ」, the "this" version of 「あいつ」; also 「やってん」 from 「やっているん」.
From other routines in the library. Automatic transcripts, not yet checked line by line.
あいつ means “that guy / this guy” (rough). あいつ, こいつ, そいつ and どいつ are casual words for people: “that guy”, “this guy”, “that one (you mentioned)”, “which one”. They replace あの人, この人, その人 and どの人. Between friends they can sound friendly; about strangers or superiors they sound rude.
With friends: OK. With coworkers: avoid. With a boss or teacher: avoid. Casual to rough. Can sound warm between close friends; rude about someone you should respect.
In 1,905 live comedy routines, あいつ appears in 922 lines from 167 comedians.