Hilarii 

(Pronounced: Hilari-eye)When something is so humourous or hilarious it has to be changed into the plural form.

Evan:Dude, Paul got attacked by a shark!
Alex:Thats hilarii!!!

Alex:Aliens have landed and they're 50 foot vikings trying to kill us all!
Evan:That isn't hilarii!

Hilarii by Alex Cardenas December 27, 2007

hilarii 

See hilarious.

When you kicked spaz in the nuts, it was hilarii!

hilarii by adamisaspaz March 6, 2003

hilarii 

when something is so hilarious it needs to be changed to the plural of hilarii. pronounced hilari-eye

do you remember when johnny found out he was kissing a guy. that was hilarii

hilarii by Sheehan boi November 3, 2011

hilarian 

My sister came up with this word to describe me when she was about eight years old. It is a portmanteau combining "hilarious" and "comedian." It is used sarcastically conveying the idea that "although you think you're funny, you're not."

Dude: Jack be not nimble; Jack be not quick; Jack couldn't jump over that there candlestick.
Bro: Hilarious, dude.
Dude: I'm a poet, I knows it.
Bro: Yeah, you're a real hilarian.

hilarian by J No Period November 4, 2020

hilariocity 

Used to define a so-bad-it's-good movie. It's such an atrocity, it's hilarious. Hilariocity.

Did you see The Room? It's such a hilariocity.
The Wicker Man starring Nicolas Cage is one of the greatest hilariocities of all time.

hilariocity by IAMtheAK August 8, 2016

Hilarious and original 

A reply to a post online that is so overused it is no longer funny, hence the intense sarcasm in both words

Post: Ayy lmao
Reply: Hilarious and original

Hilarious and original by Mary Beth Sue April 24, 2016

Mentally Hilarious 

A 'better' alternative to using the word 'crazy' or 'insane' to someone. Or just a fun way to call someone crazy. Also, 'mentally jolly' can be used. From the Family Guy episode 'The Fat Guy Strangler'.

"Dr, is my brother really insane?"
"Mrs Griffin, we don't use the word 'insane', we prefer the term 'mentally hilarious'"

Mentally Hilarious by scarlett_sweeney September 1, 2009