(ABDL, North America) The state of mind in which one is (sexually) enamoured with diapers.
I would be honored to be known for my chronic case of diaperbrain
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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
See all Regional & Other slang on Slangora.