Green’s Dictionary of Slang

tubesteak n.

1. (US) a hot dog, a frankfurter; bologna.

1963		Pop. Science Dec. 201: Tube steak Hot-dog sandwich.
1968		Minute Bk 11 98: ‘Hang tight, Baby, I’m going for some suds and goobers. Need anything?’ ‘Yes, bring me a tube steak’ (hot dog, I think she meant) .
1968		Current Sl. III:1 13: Tube steaks, n. Hot dogs.
1971–2		C. Shafer ‘Catheads [...] and Cho-Cho Sticks’ in Abernethy Bounty of Texas (1990) 216: tube steak, n. – bologna.

2. (orig. US) the penis [f. sense 1].

1979		(con. c.1970) G. Hasford Short Timers (1985) 20: For the hundredth time. I tell Cowboy that I want to slip my tube steak into his sister.
1980		E. Folb Runnin’ Down Some Lines 153: The penis is also referred to as a piece of meat: beef, meat, or tube steak.
1999		G21 mag. 🌐 WHO ELSE BUT TOMMY LEE? Who else could say they [...] make video tapes of her doin’ a Monica Lewinsky with his tube steak during the honeymoon.
2003		Guardian G2 5 May 18: I did accidently glimpse something [...] that gave new meaning to that quaint old-fashioned phrase ‘tubesteak.’.

In compounds

tubesteak tarzan (n.)

a homosexual.

2003

Wonderland Concepts, Inc. & Matt Gidney ‘Ask Mitch’ 9 Jul. at MitchInWonderland.com 🌐 Fact is, in New York, its high near impossible to tell a tubesteak tarzan from a carpet muncher. Their personas have completely blurred together in this weird Kenneth Cole/non-comedogenic moisturizer haze.

In phrases

hide the tubesteak (v.)

to have sexual intercourse.

1990

(con. early 1950s) J. Ellroy L.A. Confidential 368: He don’t like to kill them, just play hide the tubesteak like you and me.