Green’s Dictionary of Slang

salami n.

the penis.

1967		I. Rosenthal Sheeper 115: To be loved by a six-year-old with a big man’s cock (twelve-inch salami).
1977		J. Sayles Union Dues (1978) 148: Fuckin ten-pound salami he’s got there, don’t have to pack a nightstick.
1989		(con. 1968) P. Theroux My Secret Hist. (1990) 361: You mean, those bare-assed Karomojong? Was I supposed to pretend they weren’t naked? I’m standing there with you and those men and I see four huge salamis swinging back and forth, and so I make a remark about a delicatessen.
1993		T. Jones Pugilist at Rest 36: And my salami is really worth a try —.
2004		J. Ellroy ‘Hot-Prowl Rape-O’ in Destination: Morgue! (2004) 274: A rabbi with a kiddy-raper jacket. He made a little girl nosh his kosher salami.
2012		G. Pelecanos (con. 1972) What It Was 76: Tony Curtis is a Jew [...] Means Janet [Leigh] likes her salami cut.

In compounds

salami slapper (n.)

a masturbator.

1997

Roger’s Profanisaurus in Viz 87 Dec. n.p.: salami slapper n. One who tolls upon their own bell end (qv); a wanker.

In phrases

slap the salami (v.) (also stroke the salami)

to masturbate.

1985		‘Jennifer Blowdryer’ Modern English 76: masturbation (v): Stroke the salami.
1999		A. Herz Amer. Pie [film script] I have to admit, you know, I did the fair bit of [hesitates] masturbating when I was a little younger. I used to call it stroking the salami, yeah, you know, pounding the old pud.
2003		Number One Adult Sexual Health Terms Advisor 🌐 Masturbation Slang Male Terms: [...] slap the clown/donkey/pud/salami.