The nipsty-nine is the more advanced version of the Sixty-Nine. Instead of focusing on the genitals each partner sucks on or plays with the others nipples while in the traditional sixty-nine position.
"Baby can we 69 later tonight?"
"How's about we treat our nipples right tonight with a nipsty-nine instead"
"How's about we treat our nipples right tonight with a nipsty-nine instead"
by Dickey G. August 20, 2015