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Large breasts bouncing in such a manner as to put one in danger of boob lashing orboob knocking.

Occurs in less threatening situations where large breasted women are observed running, jumping, dancing or pulling on tight jeans.
Ann assumed the cowgirl and I had a first class seat for some serious tit roll.

The DJ played Milkshake and everybody in the club got tit rolled.
by lobolilly May 06, 2011
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