This is how it goes: take a dump - it can't be any poop it has to be a fairly firm, but still slightly moist - poo that can be worked like clay.
Shape it into a poo-dink complete with a fluted mushroom-head.
Carefully wrap it with plastic wrap or silicone paper (used for baking) and throw it into the freezer until it freezes solid.
When it's ready, and so is your partner, take it from the freezer, peel back the Saran Wrap or silicone paper so that you're holding the base of it, and have unwrapped it kind of like you're holding a churro or some other similar kind of food. Now bang your partner with it, and enjoy it slowly melting and falling apart inside her/him as your bring her/him to gooey multiple poogasms.