My four year old grandson cannot say the "th" sound yet, so when he says his little brother's name, Ethan, it comes out "Efan." Ethan started going to a Mother's Day Out two mornings a week and came home with things he had done at school with his name on them. When the older grandson saw his name written "Ethan" he was adamant they had spelled his name wrong. He thought it should be "Efan!"