Noun. In the workplace: A boss (male or female) who says "no" to your creative & efficient idea, because they did not think of it first.
Verb. Operational Cockblocking: the act of getting ahead in the workplace rejecting your idea, but as their means to get ahead later in the future. See Operational Clockblock.
I thought Clockblockers, who can't get laid, only hangout in bars....
But today an Operational Cockblock happened to me.
Where my boss rejected an idea I had, because they thought it was dumb; although the idea would have saved the company millions.
Where a year later........:
Your boss got promoted because they used your idea they "brilliantly suggested"....
......and a week later: you get fired.