1985 Moonlighting (transcript of TV programme) 19 Mar. in www.davidandmaddie.com (O.E.D. Archive) I'm supposed to sit here and discuss my mental health with a man who refers to the act of human procreation as ‘boinking’.
1990 S. Morgan xi. 84 Marty never got down to doing it. You know, it. Boinking.
2006 (Nexis) 14 Feb. r3 The show is packed with lovely bums (male and female), bosoms and considerable boinking.