levy (and frank), n. — Green’s Dictionary of Slang

levy (and frank) n.

also leavey

[rhy. sl. = wank n. (1), ult. the name of a chain owned by London restaurateurs Levy and Franks]

an act of masturbation; also as v.

1958		F. Norman Bang To Rights 187: I’ll have a leavey [...] and imagine that I’m haveing a bunk up instead of you.
1960		J. Franklyn Dict. of Rhy. Sl.
1977		D. Powis Signs of Crime 191: Levy (& Frank), to To masturbate (wank). (Brewing firm.).
1978		Maledicta II:1+2 (Summer/Winter) 118: He [...] also lists: [...] Levy & Frank Wank.