There isn't anything ironic about that..
Odysseus calls to the god Poseidon for vengeance when he escapes from the cave of the Cyclops Polyphemus in Homer's "The Odyssey." This act angers Poseidon, who is the father of Polyphemus, and sets off a series of obstacles for Odysseus on his journey back home.
Odysseus calls himself "Nobody" to trick the Cyclops Polyphemus in the Odyssey. This clever trick allows Odysseus to escape when he blinds Polyphemus and the other Cyclopes ask who harmed him. Polyphemus replies that "Nobody" has harmed him, so they do not come to his aid.
In the end of the Odyssey, the cyclops Polyphemus is blinded by Odysseus and his men before they escape from his cave. As a result of this act, Polyphemus calls upon his father Poseidon to seek revenge on Odysseus, leading to further challenges in Odysseus' journey back home.
Polyphemus calls upon his father Poseidon to curse Odysseus.
Odysseus tells Polyphemus that his name is "Nobody" when asked for his name. This allows Odysseus to trick Polyphemus when he later blinds him and Polyphemus calls for help, claiming that "Nobody" is attacking him.
When his fellow cyclops came into the cave, Polyphemus said that "Nobody" was trying to kill him (Nobody = a name). The others heard it as "nobody" was trying to kill him, meaning that he was not in danger (nobody = no one).
Well, according to google dictionary, a ninny is a foolish person. In the Cyclopes, the Giant calls Odysseus a ninny because Polyphemus (the Cyclops) is mad about being stabbed in the eye and going blind, so as an insult, he calls Odysseus a ninny. Hope this helps!
Polyphemus says to his fellow Cyclops that he has been blinded by "Nobody" when he is attacked by Odysseus in Homer's "The Odyssey." He then calls for help from the other Cyclops, but when they hear him say that "Nobody" has hurt him, they assume he is fine and do not come to his aid.
At the end of the Cyclops adventure in Homer's "Odyssey," Polyphemus, after being blinded by Odysseus, calls upon his father, Poseidon, to curse Odysseus. He prays for revenge, which leads Poseidon to make Odysseus's journey home perilous and prolonged. This curse results in numerous trials and tribulations for Odysseus and his crew as they attempt to return to Ithaca.
Odysseus displays hubris and arrogance, taunting the cyclops Polyphemus as he sails away. This decision later haunts him as Polyphemus calls his father Poseidon to curse Odysseus.
An example of rhyme in The Odyssey is in Book 9, where Odysseus and his men encounter the cyclops Polyphemus. Odysseus tells the cyclops his name is "Nobody" to deceive him. When Odysseus and his men blind Polyphemus and he calls for help, the other cyclopes hear him saying that "Nobody has blinded me." This creates a rhyme within the dialogue.
Odysseus gives Polyphemus a fake name, "Nobody," so that when he blinds Polyphemus and calls for help, the other Cyclopes would think that "Nobody" harmed him and wouldn't come to his aid. This clever deception allows Odysseus and his men to escape from the Cyclops' cave.