When someone stops or prevents another person from buying or wearing crocs shoes.
"Man, I really wanted those crocs shoes, but Bill got in my way. He is such a croc block."
by juliman November 5, 2012
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When you go out in a group and one of your friends wears crocs, thereby preventing anyone in the group from getting tail.
"Omg, I can't believe you let her go out in those tonight. Total Croc block."
by Srizie January 25, 2009
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When NFL QB Brett Favre texts pictures of himself masturbating in nothing but crocs to sports reporter Jenn Sterger, only to have his cunning advances spurned.
Tony Kornheiser: Man, looks like Favre really got croc blocked by Ms. Sterger on that one!

Al Michaels: You're still not funny.

Tony Kornheiser: Brett Favre!
by Marty.R August 5, 2010
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When a male is assumed to be a homosexual due to the presence of crocs on ones feet.
i asked her if she wanted to go have sex. she replied with a gang of laughter and the words ' croc block ' and asked me if i wanted to go shopping instead.
by Joel dontfuckwiththebuck October 27, 2010
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To hinder the ability of a friend or associate to engage romantically with strangers by wearing the unfashionably foam shoes called "Crocs," thereby conferring the aura of a friend-of-Croc-wearers to said friend or associate.

Noun form is a "Croc-blocker;" One who Croc-blocks others.

Also see: Cock-blocking,
Friend 1: "Damn man, Brett has really got to stop wearing Crocs... I can't pickup any chicks around him."

Friend 2: "Yea man that stinks, he is totally Croc-Blocking you"
by Taytayshenaynay January 12, 2021
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