One time I signed up on a site with 'Sign in with Google'. Months later, I wanted to delete my account, but the deletion process required I enter my account's p

One time I signed up on a site with 'Sign in with Google'. Months later, I wanted to delete my account, but the deletion process required I enter my account's password, which obviously I was never prompted to set up. The site wouldn't let me do a 'Forgot password' to set a password, so the account was impossible to delete.