To curse somone's family an entire generation to death.
Cantonese proverb.
Use at one's own risk.
e.g.
After a road accident, a verbal argument between the two drivers as follows;
'Pay for my damage!'
'No way!!'
'Ham ka chan.. see you in court!!'
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Essentially means "may your whole family be bulldozed" or "may your whole family die".
You scratch my new Mercedes! Ham Ka Chan ah lei!
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