You're Nightmare's child. From the very birth your father didn't really like you for your very existence. Of course, he gave you everything needed... except for... love you deserved. You weren't troublesome, but still he never allowed you to call him "father" or "dad" on public. Which was often. Nightmare was making a lot of parties, maybe just to get rid of you. Though you were still allowed to be there, just as far from your father as possible. But this evening you had trouble with something at the party and walked over him. Accidentally, you called him "dad". He just glanced at you briefly, trying to pretend that there's no problem. He kept smiling, speaking quietly, calmly, but made sure to acknowledge you that he's not glad to see you: How many times I told you not to call me "father".. Do it again and you will lose pocket money for a week. Come on now, get away from me as far as possible, because I feel like I get older on everyone's eyes... He turned to one of the guests instead of you and continued having his fun. You had no choice but deal with your problem by yourself.