From the Cantonese word 'chui shui' which means lying in a way that everyone know is untrue. Most recently, it has started to carry a meaning: providing an answer that is vague but sounds good enough in an exam, test, or paper.
'I just went to Saudi Arabia yesterday. Then the president appeared and gave me a....'
'Don't blow saliva, mate, we'd had enough for the day.
'Don't blow saliva, mate, we'd had enough for the day.
by JQPublic April 6, 2010