When someone calls a pull-up a diaper and you desperately want to correct them.
When friends or family start talking about ABDLs or other non-vanillas and you get verry worried that your facial expression will give you away.
When someone casually mentions anything about Depends, incontinence, or old people problems and you wish you could give advice, but you don't.
When someone says how cute a baby/toddler is wearing nothing but a diaper, and you disagree just so they won't know how cute you really think it is.
When someone comments about a child being too old for diapers and you want to say there is no such thing as too old for diapers.
When someone confesses to still having a stuffie or doing some other ABDL-adjacent behavior and you reassure yourself that ABDLism isn't as far from mainstream as you often think it is.