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1.
The secretion of milk from the mammary glands. A common fetish
Ooh shit, i'm lactating!
by Tom May 02, 2003
 
2.
ejaculating milk from the titties. many people like to drink this milk. some even squirt it in other people's eyes.
it also makes women's titties get really huge!!!!
haha i lactated on yo face bitch! (god i love lactation)
by wtfux0rz September 23, 2007