Invented by one Laura Roberts, an anti-Semite for the comedic value. She used it as an insult for BubTheZombie over an AIM conversation to make fun of his Jewish blood.
activeeuthanasia:"fuck you jewcake. get back in my oven."
ImaCapitalistDog:"wtf?"
After a group of men bukkake (ejaculate on the face) on a whore (preferably woman) they proceed to pay her by making it rain hundred dollar bills. She gets to keep whatever bills stick.
(Suspend disbelief we all know Jews would throw dollar bills)