A Marshmallow Bag is an underused term that is a reference to the softness of the female genitalia.
Ex: I have a soggy Marshmallow Bag!
“Marshmallow Bag? That’s what she said!!”
by SparrowQuantic February 12, 2019
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Referring to a female's 'down under'

Credit to me and SparrowQuantic for creating this term
A: So I was touching my marshmallow bag...
by R a v e l February 26, 2019
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