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Uboa is a character in a 32-bit PC game called Yume Nikki. He/ it appears in a random event in which you turn the lights off in Poniko's house, causing Poniko's sprite to change into Uboa. In this event, the room is changed slightly, and a muted "aaaaaaaaaaaah" sound is heard. He is known for surprising players.
Don't mess with the lights, or Uboa's gonna com-aaaaaaaAAAAAAAAAAA
Uboa by Alice Owen July 2, 2011
Related Words

U-bend U-boat  

A turd that is submerged in the U-bend of the toilet like the german submarines (U-boats) used to hide beneath the surface of the sea. 9 out of 10 U-bend U-boats are unflushable in the average toilet.
For fucks sake, that U-bend U-boat just won't flush! Pass me the bog brush Dave, it turd bustin' time!
U-bend U-boat by MSN NINJA April 19, 2009
literally "unterseeboot" or German for "Under water boat"
U-boat by IrishRepublicanArmy December 21, 2003
The act of giving credit to a circlejerker for his or her contribution to the reddit community.
I upboated that motherfucker because he posted some great shit!
upboat by fapfapfapfapfapfap April 5, 2010
Derived from the Upvote function used in the online discussion board Reddit, this derogatory term is used to ridicule others for poor posting quality on discussion platforms; or otherwise conducting themselves in an immature fashion and in a manner which may be disruptive towards other users of the website. It is commonly used on the online image-based bulletin board 4chan, as well as other similar websites in which its users may share an aversion towards users of the website Reddit.
Annonymous 1:"Kek stay mad fgt"
Annonymous 2:"Ahahaha ebin my dude! Upboated on leddit xDDD"
Upboat by A Newfag August 2, 2017
A bloody queef onto one's face.
It was gross, last night he wanted me to ubootat.
Ubootat by Logan1156 April 29, 2008
More from Urban Dictionary
Being ignored by someone when making a statement or asking a question. Also known as blanked and turfed.
Person 1: Did u watch ** last nite?
Person 2:......
Person 3: O no u got aired!
aired by Pietro February 9, 2005
Word of the Day on October 10, 2026

piddlefart

Instead of doing my homework, I decided to piddlefart around for two hours.
piddlefart by Rene April 25, 2005
Word of the Day on October 9, 2026
anyone who succeeds in disgracing/over indulging themselves in the throws of clubland
28 hours and 4 clubs later, gurning for england but still refusing to go home - a total wrongun!!
wrongun by bevvers March 21, 2007
Word of the Day on October 8, 2026

square grouper

Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."
square grouper by slipsheet November 6, 2004
Word of the Day on October 7, 2026
A girl who does ballet and only talks about ballet. Her schedule is filled with dance classes which does not allow her to do any other activity.
"Hey, do you know that girl Sally?"

"Yeah, she's kind of annoying. All she ever talks about it ballet."

"Wow, what a Bunhead."

"Hey Sally, you want to hang out this weekend?"
"I can't, I have dance."
"You're such a Bunhead."

"Yeah... I know."
Bunhead by Jen00 October 24, 2014
Word of the Day on October 6, 2026

trucker's tan 

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.
Word of the Day on October 5, 2026
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