Gusset Stain
The secreted white goo left on a woman's underwear upon evaporation of her puss-juice. Normally of a mega stinky nature, it ripens over time like a fine wine.
"Hey Pete, did you see that gusset stain on my old ladies bloomers?"
"I sure did Clemence, an man was it stinky"
"Woo-hooey, hyuck hyuck hyuck"
"I sure did Clemence, an man was it stinky"
"Woo-hooey, hyuck hyuck hyuck"