When a chick takes a dump in your bathroom. It's usually much quicker than a dude's dump (but still a few minutes longer than a tinkle) and when you enter you don't smell shit, but an overwhelming reek of perfume or scented deorderizer. They might deny they took a dump in your bathroom, but you know.
"I'm going to go take a chick dump in your parents' bathroom." - Chris's girlfriend on 'Family Guy'