Marshing

When one takes a marshmallow and rests it on anothers anus, and then forcefully insterts it using a penis. This continues until the anus is almost completely filled with marshmallows.

Marshmallow creme may be used as lubrication, but anal lube is a definite no go, since the marshmallows will eaten out of the asshole afterwards.

"Hey what do you want to do tonight?"

"Ohhh I suppose we could try Marshing..."

"Yes! Let's do it!"

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