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When a woman hits someone with her tits. It is roughly the female equivalent to a mushroom stamp. The root word 'milk' comes from the female mammary glands (i.e. breasts) ability to produce milk.
"She knocked my glasses off my face with her tits when she gave me that milkstamp"

"She has huge tits, so she gives great milkstamps"

"Will you tell your mom to stop milkstamping the neighbors with that giant rack of hers?
by Jdex August 07, 2010
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Sep 14 Word of the Day
Micro marriging is when your partner manages your personal day-to-day tasks with you much like a Micro Manager at work.
Wife: “Have you put the sheets out to dry and put the towels on?”
Husband: “Yes. You know I am a grown adult also used to live alone so you do not need to micro marrige me”
by Thomas Maddocks March 16, 2018
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2
Giving someone a 'mushroom stamp' with a penis that recently released semen, and still has residue on the head. Aka a cummy mushroom stamp.
Brian gave Andrea a milk stamp on her cheek, leaving a dick shaped mark and man juice around it.
by Benny Ben Ben October 08, 2008
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