When the coworker that's supposed to take over your shift shows up early and gives you the impression that you're almost off, when in reality you still have x amount of time till you can clock out.
After seven years of unrequited lust, I had just started making out with Lauren when my alarm went off... yanking me back into the cruel, sexless real world via the ultimate clockblock.
The act of not informing or preventing someone from knowing the time, in most cases for selfish or spiteful reasons and/or even no reason at all. This can include deliberately misinforming a person a wrong time for their gain or the other parties loss in any given predicament or scenario
Though the man at the busstop clearly had a watch on, he clockblocked me when i asked for the time, leaving me unsure if i had missed my transfer.
A small country (home) usually inhabited by a single father with his children living with him preventing the random hook-up or the ability to travel at will.