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1.
1. Slang for sperm.
2. Warm man juice straight from the testicles.
Damn when I asked for this burger I said no fucking manonaise!
by S. Taylor October 17, 2006
 
2.
A slang word for semen, playing off of seminal fluid looking white and pasty, like mayonaise.
That "ho" just swallowed all my man-o-naise.
by Jambo Schlarbeard July 11, 2006
 
3.
Synonym for semen
She got me off so hard, there was manonaise everywhere
by Cubswin Today June 06, 2012
 
4.
Man sperm.
*Squirts teh manonaise on teh biznatch*
by ANTI POP 101 April 23, 2004