Unintentional crease/fold in a notebook, paper or book currently in use. Can be used as noun/verb or reflexive verb/adjective.
1. I have a doucheflap in my notebook. RAH!
2. Shit. I just doucheflapped my book.
3. This notebook is doucheflapping on me!
4. This book is so doucheflappy!
A Shackteau is a humble, weather-beaten, structurally questionable shelter located in a spectacular or highly coveted place—Wales, Jackson Hole, Sun Valley, Crested Butte, coastal Maine, the Alps—where the building itself may be worth almost nothing, but the dirt, view, access, and mythology make it absurdly valuable.
In use:
Shackteâu - We thought it was an abandoned shed until the realtor called it a rare alpine Shackteâu with unobstructed views and listed it for $2 million.