Taking an awful shit in the bathroom so that nobody is able to have sex in it later. Where there is only two places left in the house to have sex and your boy has you covered on one!
James' ex and some other hot girl where going to go have sex in the bathroom but he thought ahead and shit blocked them earlier.
by Jenrette J, December 24, 2006
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When you go into a public bathroom to take a dump and the stalls are occupied prohibiting you from doing your business.
I just went into the office bathroom and I got shit blocked by my boss!
by john coulda woulda shoulda July 29, 2009