Top Definition
Someone who inadvertently or purposely cockblocks themselves. And others. As often as possible. Attached as a last name for emphasis.
Dayum, I am such a McCockblock.

Oh, yeah I was so gonna get with that guy, but they don't call me Jessica McCockblock for no reason.
by Cathy with a K April 14, 2007
6 Words related to McCockblock

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