An odd being, usually an animal, that is behaving in a way that gets nothing accomplished and is harmful to the being's well-being. Usually considered cute.
Person 1: Look at my cat, it is trying to eat bread, but it can't!
Person 2: Yeah, he sure is a scrimblo.
When something a person or a group has planned in advance or is looking forward to does not happen. May be exclusively used in California. An extended use of burn.
Person 1 : Dude, Jay flaked and now we have to walk to the library.