When you fall onto your knees on a rocky/gravelly path,
Scraping both knees on impact, little rocks and debris stick to the scraped area.
Giving the grim impression of pizza on your knees.
Usually happens while rollerblading up gravel paths.
"I was rollerblading down that path when I fell over and got pizza knees"
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.