When something is a pure "mazza".
"Mad! Can't believe Tom hit Sarah! That's a pure Sanabungay!"
Basically mate its like a mazza, just like, some shit happens, "ohhhh pure chenko". If a mazzine happens its like "yeah its chenko". You can adapt the word and go, say like you just absolute buzzing, you just go "That's a chenkini that!"
"Lad I've just had a chenko of a time at Toms gaff, his mum was on a chenkini!"