something that makes you laugh hysterically when blazed. it's usually not funny in a clear state of mind.
"yesterday i got lifted and watched jeopardy, that shit was highlarious"
by blazed March 16, 2005
His high-jump was highlarious!
by chitsb December 30, 2009
1)a high level of lariousism

2)something hilarious whilst high in a altered state of consciousness
"that was highlarious"
by steen tee April 17, 2003
something that is found extremely funny, usually after approx. 4:20
my best friend made a PB & ice cream bagel, that's Highlarious
by John November 21, 2003
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 18, 2003
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
A term that is only funny when all parties involved are under the influence.
Mary told a joke at the party. Everyone cracked up. It was pretty Highlarious
by TehDwarf November 17, 2008