15
Holds a few meanings. And was established at Western Illinois University c. 2008

A situation, comment or story that makes you laugh as if you were high.

Something that happened while you were high that was so funny that while reminiscing about it sober, makes you laugh as if you were high.

When in public conversing with some one you know is down, in front of others who are not down, it is a code to let them know that the particular funny instance happened while being high.
Yea bro, it was 1:30 in the morning and we had just arrived on adams street that night, Erik yells, "Its a beautiful night to fuck a chick in the ass!" it was High-larious.
by advtrkers December 01, 2011
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16
adverb. highlariously
adj.1) a high level of lariousism
2) something that is hilarious whilst high in an altered state of consciousness
"why, that was simply highlarious"
by steen tee April 17, 2003
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17
When something that usually wouldn't be funny is funny, but only because your high.
John : That picture of the dog in the hat was so funny last night, but it is not funny anymore.

Joe: Yea, it was just highlarious, I guess
by justcallmegloria June 20, 2011
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18
Something that is only funny when you are stoned. Can also be substituted with highsterical. The more stoned you are the more highlarious things seem to be.
The movie, Liar, Liar wasn't that funny sober but it was highlarious after eating a pot brownie.
by maceo6 July 26, 2010
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19
Something that is funny only to people who are high.
High guy: "Dude that is so funny!"
Clean guy: "The chair is highlarious, yes, and you need help."
by Another teenager October 06, 2010
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20
When you have smoked marijuana ,gotten stoned ,high or smoked a doobie and you find it hilarious.
That joke you just told was highlarious!!!
by Redazzbaboon July 23, 2016
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21
1) when something is beyond funny

2) when someone is high and makes a funny joke
while we were smoking shiba yesterday, Martin said something Highlarious!
by Roxybaby00 August 03, 2005
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