soixante-neufn.
/swasɒn(t)ˈnəːf/, U.S. /ˌswɑˌsɑnˈnəf/ colloquial.
Simultaneous oral stimulation by two people of each other’s genitals for sexual pleasure; an act of this. Cf. sixty-nine n.Quot. 1888 show the same sense in a longer French phrase, in an English context.
ΘΚΠ
the world > physical sensation > sexual relations > sexual activity > oral sex > [noun] > simultaneous
sixty-nine1883
soixante-neuf1909
1888 tr. P. Perret Tableaux Vivants xiii. 109 In familiar language this divine variant of pleasure is called: faire soixante neuf (literally, to do ‘69’).]
1909 G. R. Bacchus Maudie iv. 79 What a lovely sight it would be to see soixante-neuf between the two [girls].
1970 E. M. Brecher Sex Researchers iv. 98 By a delicate turn of phrase, van de Velde awards his post-Victorian nihil obstat to the practice of soixante-neuf.
1975 P. Kronhausen & E. Kronhausen Sex People ii. 17 There was, of course, both lesbian and heterosexual 69, the famous soixante-neuf, which is obligatory for every sex show.
2010 M. Amis Pregnant Widow (2011) 422 She disapproves of soixante-neuf. She says, ‘You can't give the thing the undivided attention it so richly deserves.’
This entry has been updated (OED Third Edition, March 2022).
soixante-neufv.
/swasɒn(t)ˈnəːf/, U.S. /ˌswɑˌsɑnˈnəf/ colloquial.
intransitive. To engage with a partner in simultaneous mutual oral stimulation of the genitals for sexual pleasure; to participate in a soixante-neuf (soixante-neuf n.).
ΚΠ
1969 S. Cloete How Young they Died xxvii. 170 Two lesbians making love. Soixante-neufing.
1974 S. West Boy Meat 33 We soixante-neufed. It was the greatest thrill ever.
1991 J. Barth Last Voy. Somebody the Sailor 194 He and Teri soixante-neufed to the point of orgasmic vertigo.
2020 @fandoms_teapot 28 Dec. in twitter.com (accessed 9 Oct. 2021) They're soixante-neufing right in front of the salad!
This is a new entry (OED Third Edition, June 2022).
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n.1909
v.1969