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.
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"
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!
When your are in a picture with a hot girl, only to find out she or someone else has cropped you out of it; most of the time to make it a more appealing facebook default. Usually a limb or portion of your face still remains in the photo, letting everyone know you weren't important enough to be kept in it
I was totally cropblocked out of kelli's facebook default, fml