A code name for a particularly hot specimen, either male or female (whatever floats your boat). When sighting such a specimen, chillie should be uttered under your breath to the closest fellow chillie spotter. If the inevitable happens and the 'chillie' overhears, it's fine as they'll be completely oblivious!
Person 1: Dude, chillie 3 o’clock
Person 2: Ahh, I just jizzed!