Quarter Moon 

When you pick at your toe nails when they are long enough to get a peice that looks like a quarter moon.

While I was on the computer, I picked quarter moons til they were all gone.

Quarter Moon by Theonly1Vindicator_soquitusing July 19, 2009

Black Moon Quarter 

A span of 3 months in which 4 new moons occur.

Between October 1st and December 31st there were 4 new moons instead of the usual 3 making those 3 months a black moon quarter (as in a quarter of a year).

Black Moon Quarter by Enocturn November 28, 2018

quartermounder 

Vaginal lips that resemble a cheeseburger and form a perfect mound.

"She laid back and as I slowly pulled her panties down, I was left gasping at the sight of her juicy quartermounder."

quartermounder by Cwuppacwoffee March 5, 2019