What is Mdb?
1.
abbreviation for Masters in Douche-Baggery. Title is granted, normally in an honorary fashion, to an individual who displays a pompous attitude or pretends to know everything about everything. Also added to the end of a name, similar to other titles.
John was clearly using his MDB while working with a client the other day.
Just another lame move by John Q Public, MDB.
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2.
Sexual term meaning to take a Mountain Dew Bath with someone. A fantasy to fill a tub with mountain dew(or another favorite beverage) and then share it with a partner.
That chick looks like she just got out of an MDB.
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3.
Mega Douchebag -- when someone goes beyond just being the regular
Brian from DcEvo: I was street racing last night w/ my kids in tha car fo sho!!!
Everyone else: What a MDB.
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