When one shits (the mud) and claps/shakes their ass at the same time (the flapping).
Uh oh… Jeff was the first one to fall asleep at the sleepover. Guess we’re going muddflappin’ boys! Hahahahaha, he’s gonna be so mad when he wakes up with poop all over himself!
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.