What does an ADC do?

"I've... I've made a mistake... I should never have gone Bot."

(glares at him) "WHAT... DOES... AN... ADC... DO?"

"..."

"An ADC carries. (walks towards the player while looking straight at his eyes) An ADC... an ADC carries. And he does it even when he doesn't get Ganks, a proper Support, or a proper team comp. He does it because he's a Carry."

"..." (goes back to bot lane)