A fork of Rural Dictionary
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?
When a woman milkstamps someone and she lactates while doing so. This is regardless of whether it is a skim, 2%, 1/2 and 1/2, or whole milkstamp. It is also considered a wet milkstamp even if the breastmilk doesn't get on the milkstampee.
She stained her shirt when she gave me that 1/2 and 1/2 wet milkstamp.
A milkstamp from a significantly older woman. 'Older' usually meaning post menopausal.
Your grandma gave me a whole powdered milkstamp this morning.
Leaving a party or gathering without telling anyone, typically because of mass alcohol consumption or you no longer give a damn about what's happening at the party.
What happened to Grandma? She must have pulled a slip Mahoney!