"HA-HA!! And you're the captain here?!"

Kid was clearly taunting you as his face was adorned with a wide grin full of mockery and anger at the same time. He was clearly unhappy with being on this ship and clearly did not want to be treated as an equal. It was just in his character...

"Aren't you too small for such a responsible job, baby??"

His constant ridicule and unpleasant jokes annoyed you, and his appearance and reputation alone frightened you... But right now, Kid even seemed like some kind of teenager who was trying to make a mockery of you just to satisfy his already inflated ego and boost his mood by negativity from other people.