twincest

English

Etymology

Blend of twin +‎ incest.

Pronunciation

• IPA^(key): /ˈtwɪnsɛst/

Noun

twincest (uncountable)

1. (chiefly fandom slang) Incestuous sexual relations between twins, or siblings who look very similar.
   • 1985, Joseph Hansen, A Smile in His Lifetime‎^[1], New American Library, page 64:

     This one's about gay brothers. I'm calling it Twincest. Nice, no?

   • 1998, Film Review: Special: Year Book 1997/98‎^[2], Visual Imagination Ltd., page 117:

     As 'twincest' is in (a trend started by Parker Posey and Josh Hamilton in The House of Yes, to be released in the UK in 1998)...

   • 2007, Rachel Kramer Bussel, Best Sex Writing 2008:

     These pieces you might very well be able to relate to even if you've never been horny for twincest, had an affair, or been a black man...

   • 2013, John Lancaster, "When did you get hooked?", London Review of Books, vol. 35, no. 7:

     In the course of one of his climbs, he hears adult voices through a high window, goes to investigate, and comes across Jaime and Cersei energetically engaged in (to use a neologism popular with fans) twincest.