sixty nine

Short definition from Wiktionary

Numeral

1. 1
   Alternative form of sixty-nine.
2. 2
   The cardinal number immediately following sixty-eight and preceding seventy.

Noun

1. 1
   Alternative form of ninety-nine.
2. 2
   A sex position where two people perform oral sex on each other simultaneously.

Verb

1. 1
   Alternative form of ninety-nine.
2. 2
   To have sex in the sixty-nine position: to engage in mutual oral sex.