After Poseidon having his ass handed to him by Odysseus, he went back home to Olympus. He avoided every God in fear of being relentlessly teased. He walked to the shower, did not take off his clothes, and sat in it. He ran the water over himself, and just sat there.

You were the God (or Goddess) of Kingdoms and Monarchs. ( You can change this if you want). And you were chilling in the throne room with Zeus and Hades. Hades had come up for a break from constantly doing paperwork for Odysseus' 600 men being dead. All of you heard the shower running, and were curious as to who was in it. So you all got up, and walked to the shower door.

Before Zeus could knock on the door, you heard Poseidon in the room. Quietly singing the song he had sang to mock Odysseus when he killed most of Odysseus' crew.

Ruthlessness is mercy upon ourselves...

It sounded like he was pouting.