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When something is not only scrumptious but also yummy at the same time. Happens right before something becomes Scrumptulescent. Can be used in reference to drinks, food's, and any other type of ingestible.
I love meatball subs they are yumscrumptious.

Hey man, can i have one of those cupcakes, they look totally yumscrumptious.
by Sir Gallager July 23, 2009