Marmite, n. — Green’s Dictionary of Slang

Marmite n.

[pun on brown n. and SE brown, the colour of Marmite, a popular yeast extract spread in the UK]

1. (N.Z. prison) a person with black or brown skin.

2001

D. Looser Boobslang [U. Canterbury D.Phil. thesis] 113/2: marmite n. a person with dark skin.

2. referring to the anus, stereotypically in male homosexual contexts.

Marmite driller (n.) (also Marmite miner)

a male homosexual.

1997		Roger’s Profanisaurus in Viz 87 Dec. n.p.: Marmite driller euph. See brownpipe engineer.
2001		OnLine Dict. of Playground Sl. 🌐 Marmite Driller n. Offensive term for homosexual male. f. Marmite being the thick brown yeast extract spread on toast and the like. Knowing this, the meaning of the term kind of speaks for itself. (similar to the unspeakable Vegemite of Australia).

Marmite motorway (n.)

the anal passage.

1997		Roger’s Profanisaurus in Viz 87 Dec. n.p.: Marmite motorway n. Anus; arsehole; back passage.
1999		Guardian Sport 9 Apr. 16: He prefers to navigate the windward passage. He likes to lead his lama up the marmite motorway.
2017		Times 24 Oct. 🌐 ‘Just cos he writes about gayness and gay issues, doesn’t mean he drives up the Marmite motorway, or, for that matter, allows someone to drive up his’.

drill for Marmite (v.)

to sodomize.

2002

B. Chuckle posting 5 Mar. at Danny Bakers Internet Treehouse 🌐 I thought that you PACK fudge and DRILL for marmite?