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1.
When a man or woman shits into their partner's mouth and then proceeds to tickle their partner to cause them to laugh forcing the shit through their nasal cavities and shoot out of their nose, thus creating the effect of a chocolate soft serve ice cream machine.
My girl wanted some desert so I gave her some chocolate soft serve.
by Ingleburt Humperdink October 29, 2007
 
2.
When you moon someone and drop a duece.
"Dang, you ... I sidled up to that biatch and gave him a taste of the ol' chocolate soft serve!"
by Oldie McGrumpenstien November 16, 2005
 
3.
A guy sits underneath a chicks asshole as she is about to let out a slimy shit like a soft serve dispenser. You pull her arm down as she shits like its dispensing ice cream into your mouth. She then gets a spoon and eats it out of your mouth.
Hey honey want desert?

Yeah I'm thinking Chocolate Soft Serve.

Sweet me too.
by xXSwaglord6969Xx October 28, 2014