Top definition
In most literal meaning - to subconsciously destroy otherwise smoothly going flirtation (often with just one misused word or sentence) which otherwise could very well end up in sexual intercourse.
As a metaphor - to destroy a chance for something good with silly, easilly avoidable mistake.
Synonym for self-sabotage.
Dude, why do you cockblock yourself constantly? You could've had sex at least three times last week.
by maelith October 27, 2013
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