Whenever you're talking to somebody, and no matter what or how many witty or interesting things you say, they reply with things such as, "cool" or "yeah." They won't allow a good conversation by making it suck with their one word answers.
Debbie: "I was texting Conrad last night."
Sally: "What did you guys talk about?"
Debbie: "More like, "what did I talk about?" because he was being a conversational cockblock the whole time."
by playinitcool June 9, 2010
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A word that immediately stops a conversation. It makes the other person feels so awkward that they end the conversation themselves.
"Hey whats up?"
"Nothing..."
Conversation Cockblock-ed

"So I worked yesterday"
"ok..."
Conversation Cockblock-ed
by Quiksquirl December 18, 2010
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