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."
n. software that is no longer sold or supported by the original publisher / developer, often found as free downloads on the internet because it cannot be obtained elsewhere. Not legal, but often seen as morally acceptable because the company that made it is no longer selling the title, nor releasing it as freeware, therefore abandonware is "keeping the gamealive", so to speak.
Doom II is not abandonware because idstill sells it, while The Incredible Machine is not sold, therefore is abandonware.