Top Definition
The man who has a 1 1/2 foot wang. It is said that his penis is the largest penis in the world.
I wish I had a penis like Dem Sum.
by Isaac Lortster April 26, 2003
1 more definition
1 Word related to Dem Sum
n: large amount

2; n: oriental guy
1 we were chillin at reggies densum of my niggas came over

2 Demsum brought me my fried rice
by Demsum August 08, 2006

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