phineas and ferb were working on a device that could fuse someone with the traits of another and alter reality so that every one believed they had always been that way but an event happened that caused the machine to malfuction and start changing people one of these people was the brothers dad lawrence who changed into the brothers a twin of the brothers mom and reality got altered so now the brothers have 2 moms #phineasandferb#transformation#reality#parents