Top definition
An acronym referring to Uncontrollable Boner Disease. Victims are subject to getting a boner from pretty much everything, including (but not limited to) head pats, colorful lights, the smell of delicious food, or watching tv.
Guy 1: "Hey man, why weren't you at Todd's party last weekend?"

Guy 2: "I was getting emergency surgery to treat my Type IV UBD."
by chunsberger October 03, 2011
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May 4 Word of the Day
A portmanteau of carpe diem, a Latin phrase that means “Seize the Day!” and DM, which stands for Direct Messages. This word means seizing the day via DMs.
Dude 1: Bro I just got Arnold Schwarzenegger’s number!
Dude 2: Carpe DM, bro, Carpe DM.
by LolWut098 December 30, 2020
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2
Often entered in technical support notes. Means User Brain Damage.
User stated that he smells something burning and he see's smoke coming from his computer tower. Also, he spilled his drink on it earlier. Could not assist customer further because of UBD.
by Benz0 November 14, 2004
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3
The surprise when you realised someone added a description of you on urban dictionary.
Woah, you've been ub'd!
by woahed November 10, 2010
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