Top Definition
To perform this trick you will require

1 x cup
1 x enemy

Simple, you excrete into the cup and then ejaculate, you can either force feed it to your enemy, or simply let it fester on their bedside table
Dave: " Hey Craig! I heard you got Boston Milkshaked, Last night?

Craig: " Well..ummm.. *** Whipes brown streak from face***"
by Matthew Taylor1234 April 07, 2008
9 Words related to Boston Milkshake

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