Top definition
someone who prevents another from seeing boobs
Her dad is such a boob block, he pranced in just as Meg was about to remove her shirt and share the melon.

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Drunken Diane was about to take her shirt off when her boyfriend walked in and stopped her, what a boob block.
by Roux and JD January 15, 2006
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2
The act of one woman ruining another woman's chances for achieving something. The feminine version of cock blocking.
Amy was so jealous of Jenny, she totally boob blocked her from scoring free concert tickets.
by Selfish Mom September 26, 2009
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