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1.
An expression of extreme enjoyment or gratitude.
Cult: "Now don't you want some of the yeppers?"
Ashleigh: "YAYNESS TO THE GAYNESS!"
by lilster February 04, 2005
 
2.
The hippest and coolest new slang to say if you are excited about something.

<originated from da coolest DeZ>
RHYS: dez ur so much funnier then me
DEZ: yayness to the gayness!
by DeZ March 25, 2005