sunday monday...
kidding, you mean weak points right?
look everybody has them and no body is perfect so dont try an say you dont have any. think of things about you that can be weak points but have no relevence to the job you are interviewing for. example- you dont get along well with people and are applying to a job where you work alone.
if you want any specific help i need to know what the job is and what you think your real weakpoints are