Sorry adult at 18-25 here at home under parents roof means they are supported by parents and the parents can be found liable. But not for credit issues or contracts signed by young adults as that is a personal debt..only for loss or destruction of property or possibly car accidents! Especially since the parents probably have bought it for them and have them insured on their policy. but, i know for fact that parents can be sued for their in home 18 years -25 going to school and being supported by their parents! You might want to ask any college who pays for damage at their rowdy parties dah!?