A boring girl, as interesting as beige curtains in a motel room. A Beige Curtain does not recognize humor and has no edge. She's generally devoid of her own interests outside of her boyfriend and shoes.
"Hey, man. Are you still seeing Brenda?"
"No way. Talking to her is like pulling teeth. Total beige curtain."
the long hair or fur on the back of the canine thigh that creates a curtain-like effect while the mammal arches its back and drops a deuce. said fur hides the excrement that protrudes from the canine's bung
Watch out Stephen, the wind is blowing. You don't want to get poo on your poop curtain.
Daisy is so ladylike that she's always sure to use her poop curtains when dropping the deuce.