Same as penis sympathy.
It's a scene where a man sympathizes the pain another man has felt on their dick.
Mac: Hey look, a guy's trying to grind that long rail.
Denis: He's grinding...grinding...OH SHIT HE FELL AND HIT HIS DICK RIGHT ON!
Larq: Oooh! *feels dick sympathy* I ain't gona be able to have sex for couple of days after seeing that.
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.