When you roll a condom over the top of your head like a swim cap, and shove your head deep into a woman's vagina.
Pablo: hey, Phil. Did you and Linda have a good anniversary?
Phil: yeah, I gave her a swim cap penetration.
Pablo: wow, that's like a reverse childbirth!
Before sexual intercourse a bald male first shaves off his or the females pubic hair. Then pours a bowl (or glass) of his own semen on his head and proceeds to place the pubes onto his noggin. After securing the pubic hair toupee the man spreads the womans vagina and shoves his head inside of the "Pink Swim Cap".
"Dude when I gave that chick a pink swim cap it reminded me of the days when I had a full head of hair."
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.