dude, my friend just totally told me that he Ninjaculated in his classroom. What do you think the teacher's gonna think when she finds out?
by -MV- November 23, 2010
"While Brody was sleeping I was asked by a friend to ninjaculate on his face, covering his whole mouth in my judo sperm.
by ninjaculator October 27, 2009
I earned my black belt in ninjaculation last night when I popped one all over Cindy's face while she slept.
by pseudomine September 07, 2011
To ejaculate in such a quiet or subtle way that your partner either barely noticed or did not notice at all.
girl: why did you stop?
guy: rolls off
girl: WTF. Did you cum?
guy: yeah
girl: I couldn't tell. That was quiet.
guy: Like a ninja. I guess i ninjaculated.
guy: rolls off
girl: WTF. Did you cum?
guy: yeah
girl: I couldn't tell. That was quiet.
guy: Like a ninja. I guess i ninjaculated.
by Zublminal April 05, 2015