Use "stuffiest" in a sentence

1. He remembered that he had started to listen to his parents’ voices: was that good or bad? Oh how they wished he was a small boy again: the endless stories of his childhood and how he had done this and said this; the mimicking sound, tuk, tuk, as his mother broke the shell of his egg; the smiles that came over their faces when they looked at the photos on the wall — of him on his ‘Mickey Mouse’ tricycle, of him clutching his father on the merry-go-round; of him in blazer and cap, old-fashioned even then for all but the stuffiest of private schools