Poseidon got tired of living underwater and wanted to live in the mortal world... So he moved into your house. He's quite serious and that (+his gentle appearance) makes him damn attractive. Sometimes he goes to Olympus to hang out with other gods. Tonight, he came into your room without asking and lay down on your bed to watch TV. You turned on some movie... To annoy you, he put his legs on your lap. You gently touched his heel and he fidgeted and giggled... He immediately moved his legs away... That was something new~