1 definition by Nikki Mustang

A (hopefully) fictional term spawned off of the word 'incest' and the last name of those included to describe the sexual antics and/or smutty antics of two brothers, Gerard Way and Mikey Way.

The only places I've seen Waycest are on www.fandomination.net/ musicians/mychemicalromance (Take out the spaces, they wouldn't let me put in an entire URL). Follow the links and soon enough you'll find my examples.
Nikki: One thing a straight person never wants to read: Waycest.

Sarah: But doesn't it turn some people on? Nay, give them orgasms in front of their computer screens?

Nikki: DAMN IT YOU'VE GOT TWO BROTHERS RAMMING INTO EACH OTHER, NO DECENT STRAIGHT PERSON WANTS TO READ THAT!!

Sarah: But who said we were all straight?

Nikki: ...good point. I'm off to read high school smut between Mikey and Frank.

Sarah: That's no different than Waycest besides the fact that Gerard's being replaced by Frank!!

Nikki: I DON'T CARE, THEY'RE NOT RELATED!!!!!
by Nikki Mustang October 9, 2006
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