Green’s Dictionary of Slang

rubik’s (cubes) n.

the pubic hair.

1999		Roger’s Profanisaurus in Viz 98 Oct. 24: rubik’s rhym. slang. Gorilla salad.
2003		B. Dark Dirty Cockney Rhy. Sl. 91: Hairy? You could have knitted a scarf out of her Rubik’s.