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"puffin bum" \ PUFF-in-bum\, noun:
1. The largest species of all known and recorded bums.
2. Big; Ginormous; Humongous.
3. popozuda.
"Of my goodness! Did u just see that Puffin Bum?!"
"I know! Its the biggest butt i have EVER seen!".
by Mrs Mole January 07, 2011