Green’s Dictionary of Slang

(US black) sexual intercourse.

1985		‘Jennifer Blowdryer’ Modern English 72: copulation (n): [...] Porking.
1988		McGill Dict. of Kiwi Sl. 87/1: pork/porking male engagement in sexual intercourse.
1991		R.G. Barratt ‘Starstruck? Not us Scorpios’ in What Do You Reckon (1997) [ebook] The late Richard Burton must have thought Liz Taylor pretty good in the porking department.
2000		Ebonics Primer at www.dolemite.com 🌐 pork, porking Definition: to hit it Example: Yo, you pork that??
2003		McGill Reed Dict. of N.Z. Sl. [as cit. 1988].