Top Definition
A mythical man, cousin of The Sand Man, who has a reputation of sneaking into your bedroom while you sleep and slipping severed mammary glands and warm guts(mostly mammary glands) under your pillow. He jacks off onto your pillow by you mouth before he leaves.
Do you know the Mammary Man...Mammary Man...Mammary Man?
by Timothy July 14, 2004
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