If you're the jungler in ranked and forget smite..
For the love of god be a decent human being and disconnect during the loading screen. Especially right now, since it's during placements. I really wish my loss could be removed but I know it's not going to happen. I wish it is reportable or that junglers get a prompt to take smite. Sadly I know neither of those are going to happen either.
So please. Don't be an asshole. Don't take your team down with you in your error or stupidity. Dodge the game. Allow your team to remake. Be a decent person.