Green’s Dictionary of Slang

biscuit n.2

[? one ‘snaps’ it]

1. (US black) a penis.

[US]Lillie Mae Kirkham ‘He’s Just My Size’ [lyrics] He’s a kitchen mechanic, and he makes my biscuits rise / He use the best bakin’ powder, and his biscuit’s just my size.

2. (US, also bis) a pistol, a handgun.

[US]A.J. Pollock Und. Speaks.
[US]Monteleone Criminal Sl. (rev. edn).
[US]Goldin et al. DAUL 28/1: Biscuit. [...] 5. A pistol or revolver. ‘Dump (get rid of) that biscuit; some fence (dealer in stolen goods) was knocked off (murdered) with it.’.
[US]Ragen & Finston World’s Toughest Prison 791: biscuit – A revolver or pistol.
[US]E. Bunker No Beast So Fierce 84: Get a biscuit and rip something off — a bank, anything!
[US]S. Moore In The Cut 63: There seem to be more synonyms for guns than vaginas on this list. [...] bis, biscuit, a hand gun.
[US]Ebonics Primer at www.dolemite.com [Internet] biscuit Definition: a firearm, most likely a pistol. Example: Yo lemme see dat biscuit real quick. I’ma git dat nigga over dere.
[US]G. Hayward Corruption Officer [ebk] cap. 16: These fools done fucked around and let a nigga purchase a firearm! It’s a gat, a ratchet, a biscuit, a burner to all my inner-city home boys and a ooohhwop to anybody over fifty.
Skepta ‘Corn on the Curb’ [lyrics] Corn on the curb if a man diss me /My niggas got the biscuits in T.