The act of being hideous toward others either for reason of humor or to prove a point. Hideousity is never shady, just fierce. Term coined by the DC Social Group, the House of Hideousity.
2. To be truly hideous (and thus acting with sheer and utter hideousity) one must be in some way intoxicated.
3. A reference to the genitals.
He enacted the best hideousity recorded for some time -- posting pictures of his best friend completely passed out and with marker written all over his face and arms.

Somebody who is extremely drunk and unable to care for themselves is being hideous: "Check out his hideousity."
Also, "I don't want to be anywhere near her hideousity because she has herpes."
by The House of Hideousity April 11, 2005
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Something so not funny that it makes you mentally vomit. When these kind of unfunny moments come up in a croud of people then the person who says it gets it ripped.
-When the chicken crosses the ro....
(Interuption)
-hideously unfunny
by solomonf January 11, 2009
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Similar to "bumping uglies", the act of sexual intercourse between two offensively unattractive people.
-Did you see her go upstairs with that fatass?
-Yeah, they're probably bumping hideouses.
by Wilbertforce January 25, 2011
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Someone who immigrated to the US around 2000.
... You are older than me, dude. If you don't know that expression it's probably because you have no concept of "good" because you are some kind of hideously tentacled alien robot.
by dickurbane January 20, 2015
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