Partner A lies on their back, with their mouth open. Partner B then defecates in the mouth, but swirling it upwards to resemble a soft serve ice cream.
by Lord Death Blog April 30, 2005
This is the same as the regular soft serve definition but with a different twist. After you poo in their mouth you ejaculate on the poo and then mix it or twirl it with your penis.
by The ART BOYZ January 28, 2008