A Greebo is defined as one who has hair longer than 0.6 inches, wears jeans instead of white "tracky bottoms", band t-shirts instead of an England football shirt, and listens to music that doesnt consist of a repeating 4-bar drum beat and an electronic woman singing about a shooting star across the midnight sky.
Greebo - "Have you got the time please?"
Chav - "Awh fuck off! Smack him! Smack him Dave! Go on! Go get the dogs Mike!"