To thrust the penis between a women's preferably large breasts and ejaculate on her chest and/or face. can be used as a noun or a verb. (explanation for the sex-impaired: breasts contain milk, and you bone them, hence the term "milkbone")
Hey Angi, i would really like to give that large breasted lady a milkbone.
Tom really enjoys milkboning his wife, who i am told has relatively large breasts.
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a humble human with a great smile, born with an extra funnybone.
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Verb: When a two people have anal sex and the person taking it farts
my bitch gave me a killer milkbone
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Plump + White skin = Milkbone
Anna Nicole is a milkbone. Well was (R.I.P <3)
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When you are with a random girl and you are doing it doggie style. Just as she comes you punch her in the tailbone.
I gave that random bitch a milkbone last night
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When a lactating women sprays her breast milk on a man's junk while having sexual intercourse with the women, then continues to have sex with her.
Man! That soon to be MILF wanted to Milkbone so bad last night. But I just wasn't haven it.
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