Top definition
Basically, its mail that you get that you never open and throw away immediately. Examples are circulars (even if you read it briefly), menus for restaurants you won't eat at, those bulky local town magazines / newspapers (does anyone read this shit?). Also includes fake-looking and suspicious-looking government, state or legal documentation. Basically, about 80% of your mail is instantly trash aka instatrash

Includes variation insta-trash
Most of my mail goes right from the tree to my trash can. It's instatrash
by Headcircus January 18, 2011
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