@stilgar
Because they don't actually care what it means. They have probably only ever heard some streamer say it or on some thread and started using it based off that comment.
For future reference: a cuckold is a man that has been cheated on by your wife. To be cuckolded is to be cheated on by your wife. I assume there is some leeway in this day and age to not have to be your wife, and the subject to not have to be a man. But people are out of their minds to relate it to cockblocking.
I don't know why but, I'm getting more and more into arses than boobies by each chapter. I think this author is into something like, pushing us into ass faction or something. Nice arse btw...