The sound that leaves the mouth of a dyslexic person attempting to say "cockblock"
"Dude, your friend is a major clockblock"
"Wait, what?"
The premature end of a wonderful romantic/sexual dream due to the sound of an alarm clock.
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.