Physics textbooks: "Energy can neither be created nor destroyed, just transformed!"
That kid who actually thinks about it: "But where did ALL the energy come from in the first place?!"
And just like that, a future cosmologist is born! It's that moment when you realize the fundamental laws of physics are great at explaining how things work NOW, but completely dodge the ultimate cosmic origin story. Even Einstein would've given that kid a high five for spotting the universe's biggest plot hole!