when an object, idea, person, event or anything that exists has become spoiled, unusable, or has no suitable value or worth because of extended use, or is subpar for any reason.
"this coffee is cold, it's blownout", "pc's are so blownout, mac's are sweet", "that girl has slept with way too many guys, she's all blownout", "excuse me, waitress? can i get some more blueberry pancakes? these are all blownout....oh, and some waffle fries too. thanks hon"