A cuter more childish way of saying uhoh. Can be said to oneself or to someone else. And usually after getting into trouble or when something has gone wrong.
Also a more mellow way of saying oh noes and inspired by Scooby Doo.
Guy: WTF? who drank all my beers!?
Drunk friends after taking the last sip of beer look sheepishly at one another and one says: rutroh!