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Pronounced (Mass-eye)

Basically means massive. Origins not exactly known, but probably from North-East England
"Aaaah mate, that girl has massi tits"
by Yebsthescally April 06, 2009
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3
The sexiest beast known to the universe. Massi has a dick that can expand to the outer reaches of our solar system. He's strong, smart, talented, hot, sexy, and secretly the coolest guy ever. If you meet a Massi you will cum instantaneously from the energy radiating from his inner core.
by The truth drink November 14, 2019
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