Me: so I just realized how many times Percy made Zeus mad and Zeus made thunder sound, so I'm wondering if the Demigods at camp just knows what happens whenever they hear thunder.

Zeus: *thunder sounds*

Random camper: oh look, Percy must've made Zeus mad again, or perhaps swore on the River Styx, or just was really, really stupid and fought a god.

Percy: hey! I haven't— oh wait, never mind.

Nico in the background: loser!