Meaning

1 senses
  1. (slang)To have sex in the sixty-nine position: to engage in mutual oral sex.

Origin

Calque of French soixante-neuf, from the rotational symmetry of the numeral 69 — if rotate

Calque of French soixante-neuf, from the rotational symmetry of the numeral 69 — if rotated a half-turn (by 180°), the numeral remains the same, and a couple both giving oral sex at once have, in principle, a similar rotational symmetry.

Wiktionary, CC BY-SA 4.0 · source

Forms

sixty-nines, sixty-nining, sixty-nined, sixty-nined
Base formsixty-nine · to sixty-nine
3rd person singularsixty-nines
Present participlesixty-nining
Past simplesixty-nined
Past participlesixty-nined

regular · Lesson

Present simpleLesson

I, you, we, theysixty-nine
he, she, itsixty-nines

Past simpleLesson

all personssixty-nined

Present perfectLesson

I, you, we, theyhave sixty-nined
he, she, ithas sixty-nined

Future simple (will)Lesson

all personswill sixty-nine

See also

neighbours in the dictionary
sixty-nine — meaning, examples, forms, synonyms | Krumeto