A cream pie, in addition to being a bland dessert, is, also, a pornographic term that refers to male ejaculate being viewed inside, around, or on a vagina. Different subcategories are available, mostly encompassing the myriad of ways that cum, could, in fact, find its way to a woman's naughty parts. For example, there is a decent subculture that responds well to snowballing between the usual set of lips and a set of nether lips that results in a cream pie. Other variations on this topic are left to your dirty, filthy imagination.
Also written creampie.
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