poonanny Share definition Flag A great way to refer to a female human vagina. It's kinda cute, so the chicks are usually cool when you ask to see their poonanny. or touch it, apply saliva, etc. C'mon baby, let me check out your poonanny!, or Wassup with that poonanny, baby? poonanny by quaker oatmeal July 25, 2003 Get the poonanny mug.