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1.
When someone says "Scuba Muffin!" it's a phrase to high-five to! This term Is also known as (a) "Muff Diver".
1: "Scuba muffin... Scuba muffin..... *looks up* muff diver!!

*High-fives*

2: "DUDE!!!! You're such a Scuba Muffin! *high-five*"
by Rodofwonder January 24, 2011