Green’s Dictionary of Slang

white meat n.

also light meat

1. (US) an easy target; something desirable [SE white + meat n. (1), pun on the genteel euph. for the ‘breast’ of a chicken].

[US]R. Chandler Big Sleep 121: A guy like that wouldn’t be white meat to a heister.

2. (US black/W.I.) a white person, usu. a woman and in a sexual context [the tenderness of young SE chicken; note printers’ jargon white meat, an actress].

[US]F. Swados House of Fury (1959) 116: ‘She runa round with them ofays?’ ‘Don’t ask me. I don’t have nothin’ to do with the white girls.’ [...] ‘I thought maybe she had a taste for white meat too.’.
[US]Murtagh & Harris Cast the First Stone 20: Shoot, whyn’t they try to get them some nice white meat from downtown once in a while.
[UK]W. Manus Mott the Hoople 47: ‘Shubiedoo!’ he’d sing out when a particularly good-looking girl drove up. [...] ‘White meat with lots of gravy!’.
[US]H. Rawson Dict. of Invective (1991) 415: Among American blacks, whitey and white meat also have had specialized meanings, designating Caucasian women, especially when considered as sexual objects.
[US]P. Cornwell Body of Evidence (1992) 266: ‘You prefer light meat, don’t you?’ he asked, selecting a pale flesh-colored male chest.
[UK]J. Mowry Six Out Seven (1994) 239: Niggers [...] might just find they got a whole different kind of hankerin after white meat!
[UK]L. Theroux Call of the Weird (2006) 190: You bustin’ heads to the white meat? Nigga, stop lyin’.
[US]J. Stahl Pain Killers 22: [of a man] Somebody was possibly hard-up enough to find forty-year-old white meat worth whistling at.

3. a white penis [meat n. (2)].

[US]B. Rodgers Queens’ Vernacular 49: the penis [...] light [white] meat (penis of a white man).
[US]Maledicta IX 61: white meat n [R] White man’s penis; homosexual slang.

4. the vagina.

[US]Lewin & Lewin Thes. Sl. 411/1: Vagina [...] white meat.