The story
From poofy (“puffy”) + butt, because modern disposable diapers are usually puffy.
Etymology from Wiktionary, CC BY-SA 4.0.
poofybutt
poof·y·buttToday it means: A term of endearment for a person who wears diapers. Full definition →
Today it means: A term of endearment for a person who wears diapers. Full definition →
From poofy (“puffy”) + butt, because modern disposable diapers are usually puffy.
Etymology from Wiktionary, CC BY-SA 4.0.