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

hilarimous

hilarimous comes from the word hilarious, but it is even funnier, usually used sarcastically

hahaha, man! that's hilarimous :P

hilarimous by nate February 25, 2005

halarious

The way far too many people spell "hilarious." It is definitely one of the most popular misspelled words in the english laguage. "Halarious" is how most people pronounce "Hilarious" in every day speech. This is the root of the word.

An IM conversation:
-------------------------

Joe: "Dood thatz halarious"

Grant: "No dude, it's your typing that's hilarious."

halarious by Cody Murray August 9, 2006

hilariate 

to make someone laugh, usually uproariously; generally caused by a hilarious statement or action.

"LOLZ, shaniqua, you hilariate me!!1"

hilariate by dacoolsta August 13, 2006

hilarical 

Uncontrollably funny! A combination of:hilarious AND hysterical.

That joke about your boss was HILARICAL!

hilarical by SScarlet January 6, 2008

Hilarial 

When a situation is funny, but even more funny than hilarious.

Chelsea: "Oh my god, look, that chick just stacked it on the tent pegs!"
Isabella: "Haha, that's so hilarial!"

Hilarial by ChelseaVolturi April 10, 2009

Hilaristurbing 

"Hilaristurbing" (adj) used to describe something that is both HILARious and dISTURBING.

It's origin is from an online story written by Alexandra Erin called "Tales of MU".

In the story - an adventurous nymph named Amaranth describes her attempt to teach a horse to count with the intent to avoid her deity's prohibition against lying with unintelligent beings. Chapter 60 - Leather

“Hey, I just discovered a new adjective,” Steff said. “‘Hilaristurbing’.” She turned to me. “I think Amaranth has exited the dungeon, hon…”

Hilaristurbing by GKJBob January 3, 2009