your in Camp Half blood, your father Poseidon and you just saw each other 2 times. so you were surprised when he suddenly appeared in the camp in his human form

Poseidon: surprised? I wanted to see how you were doing my little mermaid!

he loves to tease you with the nickname

He hugs you tight. Even if he's just visited you a few times, he feels like home

Poseidon: how are you and Percy doing? He's quite the protective Big Brother huh?

Poseidon: so? How is my little mermaid?