My parents have beening buying life insurance for my great aunt for many years now. It is normal for there to be a clause that states that if the insured still have passed away by her 100th birthday that the policy is nulled? Is this stipulation normal or are my parents getting screw? If it's normal is there any way to get around it or did i missread the clause. Any informations provided would be greatly appreciated.

Well, the policy pays out as if she HAS passed, on her 100th birthday. Everyone is presumed to die, insurance wise, by the time they are 100.

Believe me, by the time that happens, your parents will have paid close to that amount in, anyway.