Australian slang - a person who steals women's underwear off clothelines in the dead of night and wears them as a facemask
Bloke: Hey babe you know how your g-strings got nicked off the clothesline the other night, well isn't that fuckstick over there wearing one of them as a facemask?
Bloke's missus: Holy shit you're right hun, what a dirty coronadropper.