The inability to see anything around you except things that are shirtless. Specifically relates to gay guys and women observing a beach or other area where hot shirtless guys are around.
"Don't ask him, he can't see anything beyond his skinsight while we are near the beach."
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.