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A form of giving boob sex where the breasts are moved out of unison, alternating the left and right breast in circular motions creating a "wax on, wax off" pattern.

Alternately, having sex with a Canadian package of bagged milk, though not as enjoyable.
"she had her boobs in her hands tossing them up and down... I think she was practicing for that milk bag buff she's been promising me"
"dude, you are so lucky! she has such great milk bags!"
by WifeyKnowsBest September 11, 2011
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