Greybies
Population of children born 9 months after the release of the Shades of Grey books.
"There are so many Greybies named Christian"
greyby
Is what a young person would call an old person that likes or is attracted to young people.
That woman is old enough to be my grandma. Just a greyby trying to make me her baby.
Greyby Boom
The boom in pregnancies among married women that was caused by the popular "Fifty Shades of Grey" erotica series.
Martha, you're really showing! See, I told you if you kept reading, you'd end up adding to the Greyby Boom.