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 16, 2006
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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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When a girl works out constantly, and appears to have boobs that looks like blocks.
Dang! Did you see that girl at the gym?! She had them block boobs!
by Lil niqqa March 9, 2014
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Every time I tried to talk to Carl his brothers girlfriend interrupted and Boob Blocked all night.
by CrissFury December 2, 2018
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