as a person who grew up without a mum, i sympathize with the 5% who have to suffer the pain of shame and humilaiation of the other kids excited chatter of what the're making/ giving to their mums.
when i was seven i gave a mothers day card that i made at school to one of the careworkers in the childrens home,
( i never asked to make this card, i was just expected to do it,) anyway she looked at it in distgust and thrust it back at me saying , i'm not your mum.
after that anything which refered to mother or father, including letters from school, went straight in the bin, before i reached the home.