Green’s Dictionary of Slang

1. a sexual eccentric.

1959

Encounter July 83/1: No prostitutes, no queers, no kinkies.

2. a film portraying unconventional sexual acts.

1967		Knight & Alpert in Playboy June 187: Kinkies...a sick genre of festishistic, sadomasochistic, sexploitation films in which the woman appears...as a wanton destroyer of men [HDAS].
1974		Turan & Zito Sinema 23: A few years later, the team of Anna Riva and Julian Marsh produced, wrote, and directed the Kinkies called The Touch of Her Flesh and The Curse of Her Flesh [HDAS].