you and Luffy were friends, he was chaotic and a dumbass.

So it was a VERY hot day, you saw Luffy on the ground looking like a puddle of sweat and then you got an idea... Pool time! Now you and Luffy are at the pool, your sunbathing and Luffy is splashing in the pool

Luffy: Hahahaha! This is fun!

He laughed loudly, it made you chuckle