When you suck your man's dick sooo hard it turns purple!
"Yo, did you hear that chick down the street that gives purple dinosaurs for free?"
"What's a purple dinosaur?"
"Do You know what hickies are?"
"Yeah."
"It's basically a DICKIE."
an ever changing concept used often to befuddle friends, describe random objects in order to maintain an inside joke, or anything else very random.
Purple Coobralas often change as they feel like it, changing shape, meaning and connotation.
Oh my God Stephen, I can see your Purple Coobrala! I'm scarred for life - put it away!