Stands for U De Man. Normally an Irish saying to describe a man who is great
Sean "I kissed 12 girls last night"
by Meboy24 September 17, 2011
Urban Dictionary Master, one who has the ability to access Urban Dictionary at all times and possesses the need to use it in both times of need and in times of excess.
David is definitely the UDM, I asked him what laundry limbo is and he told me in less than ten minutes.
by curreychiken February 22, 2009