Green’s Dictionary of Slang

blue-veined adj.

In compounds

blue vein (n.)

(US black) a black person of light complexion.

[US]Warner, Junker & al. Color & Human Nature 266: ‘Because our membership is made up of these types of people and so many of my best workers are fair in color, the rumor has been circulated that we cater only to the ’blue veins’.

in combs. referring to the penis [blue vein n.].

blue-veined diamond cutter (n.)

the erect penis.

[US]Simon & Burns ‘Ebb Tide’ Wire ser. 2 ep. 1 [TV script] For your information I wake up every morning with an angry blue-veined diamond cutter.
blue-veined havana (n.) [SE Havana (cigar) + smoke v.3 ]

the penis; thus smoke the blue-veined havana, to fellate someone.

see blue-veined custard chucker
‘MillenniumJazzman’ ‘Rev. of Topless Room Service’ on DVDPornReviews 🌐 She deep throats him, spits on his cock, slurps it, licks it, sucks it and totally dominates his blue-veined Havana until he is a fuck puppet at her mercy.
blue-veined hooligan (n.)

the penis.

[UK]P. Meditzy ‘A Day In The Life Of...’ 29 Apr. 🌐 My ‘blue veined hooligan’ had been getting a bit sore lately.
blue-veined junket pumper (n.) (also b.v.j.p., junket gun, purple-helmeted junket gun) [SE junket, whey + pumper]

the penis.

[Aus]B. Humphries Barry McKenzie [comic strip] in Complete Barry McKenzie (1988) 125: Clean-living churchgoing tinted nurses [...] who probably know a few tricks with a B.V.J.P.
Allan & Burridge Euphemism and Dysphemism 100: The blue-veined junket pumper is a rather picturesque, even poetic, term for penis.
[Aus]B. Moore Lex. of Cadet Lang. 203: junket gun the penis. See purple-helmeted junket gun.
blue-veined piccolo (n.) [SE piccolo]

the penis.

see blue-veined custard chucker
Spleen ‘The Spinal Column’ in Japanzine 11 Issue 4 🌐 I knew it was the real Yoshi even without seeing his blue-veined piccolo.