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?
7 августа 2010