There is controversy aplenty over whether a gentleman should always wear a handkerchief in the breast pocket of his overcoat (as if there was any other purpose to the pocket), but one never hears the practice discussed when applied to pajamas, where it really comes in handy. For unless a man has mastered the arcane art of tucking his hank into his pajama sleeve, there is usually no other place to stash it.
That said, Michael Drake poured fuel on my fire by pointing out that his pajamas, or pyjamas as he calls them, actually have a pair of patch pockets on the coat in addition to the breast, a handy innovation that had somehow escaped my notice all these years (is there such a thing as pocket envy?). But there is still only one purpose for that storage compartment on the chest.
Stuff a hank in it.
Photo: Drake's London