Russian Rainbow

When a girl is giving a knob job, she puts Skittles in her mouth right before the guy skeets. As he skeets in her mouth he says, "Mmm, taste the rainbow, slut!"

Its the act of eating your baby brother while snorting some cocaine.

The act of inserting a fist full of multicoloured skittle sweets, into the rectal passage, before being rogered in the poop choob. After the money shot, the brave buccaneer takes position and the fruity goo is ejected into his or her mouth, trying to guess what colour or flavour they will get next.