French for sixty nine.
To demonstrate how poorly I counted in Froggish, I said, "Un, deux, trois, cinq, soixante neuf," and she gasped.
by Sean Brian Kirby October 30, 2004
soixante-neuf is 69 in French and refers to a sexual act where two dudes give blowjobs to each other at the same time.
by USAF Cadet November 18, 2020