A group of people are on an "island" that is full of cyclopes, these cyclopes are not nice at all. They eat people. These people were in danger so they planned to steal some sheep and get off the "island" They had to do something about the cyclopes though. They decided to make a weapon out of wood and stab the cyclopes in the eye. So they did
What they didn't know was that the cyclopes they made blind, his father was the ruler of the sea... This would cause harm to them in the long run.
As they escaped one man continues to challenge the cyclopes by yelling at him and telling him information he shouldnt.
If anyone asks tell them it was Odyssises who caused you to be blind and it was I who defeated you.
He didnt know that that specific cyclopes's father was "ruler of the sea". He didnt know that he had caused more harm to him and his sailors then he did to cyclopes.
As the cyclopes began to think. He knew what damage he could do to the people that defeated/ tricked him.