Fun fact: Did you know one of the most common fetishes is ag.. (OnlyFans)

Fun fact: Did you know one of the most common fetishes is age play / adult babies?! Which is when an adult individual enjoys regressing either partially or completely. 
Chances are you've already experienced what could be considered ultra-lite age play if you've ever called a partner "baby" in bed. Another common example is the "daddy dominant–baby girl" setup. If you’re calling someone “daddy” in bed you're engaging in light age play. 
A more "extreme" and less common example of age play is full-on role-playing where one partner is turned on by wearing a dia-per and acting like a baby.