Someone in Hydra finds out. Maybe he actually had a medical reason once to wear diapers, like incontinence and now it just makes him feel nice and safe to put them on. Crinkle crinkle on a STRIKE mission perhaps? The next time he's invited to some STRIKE team party, it turns out he's the main event. They goad him into getting undressed and letting them use him as their 'baby.'
+ Someone powders his butt when putting a fresh diapey on him + Cap gets a pacifier + Creative use of baby food or sippy cups + Extra humiliation and Steve coming in his diaper
Steve likes to wear diapers
Maybe he actually had a medical reason once to wear diapers, like incontinence and now it just makes him feel nice and safe to put them on.
Crinkle crinkle on a STRIKE mission perhaps? The next time he's invited to some STRIKE team party, it turns out he's the main event. They goad him into getting undressed and letting them use him as their 'baby.'
+ Someone powders his butt when putting a fresh diapey on him
+ Cap gets a pacifier
+ Creative use of baby food or sippy cups
+ Extra humiliation and Steve coming in his diaper