Green’s Dictionary of Slang

minute n.

1. (US black, also fat minute) a long time.

[US]College Sl. Research Project (Cal. State Poly. Uni., Pomona) 🌐 Minute (noun) A long time.
[US]Ebonics Primer at www.dolemite.com 🌐 minute Definition: a long time. Example: Yo, I aint seen that nigga in a minute.
[US]‘Grandmaster Flash’ Adventures 212: ‘Haven’t seen you in a fat minute. You still doin’ it like you used to, Flash?’ .
[US]G. Hayward Corruption Officer [ebk] cap. 26: I’ve been rocking for a minute.
[US]‘Dutch’ ? (Pronounced Que) [ebook] It had been a minute since he had been on the block pitchin’ hand to hand, but he still had the heart of a soldier.

2. (N.Z. prison) one year in prison.

[NZ]G. Newbold Big Huey 63: ‘Hey, how long are you doing, Dream Dealer?’ ‘You know how long I’m fucking doing. Seven-and-a-half minutes’.
[NZ]D. Looser Boobslang [U. Canterbury D.Phil. thesis] 117/1: minute n. one year’s imprisonment, e.g. ten minutes ten years.

In compounds

minute man (n.) (also two-minute man)

(US) a man who reaches orgasm quickly.

‘Rod Gray’ To Russia with L.U.S.T. (1973) 126: One thing about my Russian roué. He was no Minute Man. He could prolong his own orgasm almost indefinitely.
[US]J. Ellroy Widespread Panic 38: The fucking is short-lived [...] Senator [John F.] Kennedy is a two-minute man.

In phrases

in a minute

1. (US black) a phr. of farewell, goodbye.

[US]V.E. Smith Jones Men 24: ‘In a minute,’ Foxy said.
[US](con. 1982–6) T. Williams Cocaine Kids (1990) 137: in a minute time of no certain duration; in the future – a day, a week, an hour, but not in a minute.
[US]Bentley & Corbett Prison Sl. 49: In a Minute A phrase black inmates use when leaving or going somewhere.

2. for a while.

[SA]IOL News (Western Cape) 10 June 🌐 ‘Whassup bro’, how have you been? I haven’t see you in a minute.’ ([...] a minute is the new slang phrase for ‘a while’).
[US]C. Eble (ed.) UNC-CH Campus Sl. 2011.