tilarious 

When something is very awful, but very funny, a combination of terrible and hilarious.

That Jew joke was so tilarious.

tilarious by motw365 January 9, 2008

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

Filarious 

when something is fucking hilarious

Alize: Omg did you see Morné's hair today ?
Sonia : Hell yeah, that's Filarious

Filarious by AAAlex April 10, 2013

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

gilarious

the ultimate in hilarious, signified by the special first character, a "G"

1.adjective

a) kelly, that was gilarious!
b) you are incredibily gilarious
c) oh, thats better than hilarious, thats Gilarious!!

gilarious by beingdevious September 27, 2005

timarius

Fine ass boy

Timarius fine aka tj

timarius by Tim - Ari- us May 14, 2018

hilariousaurus rex

When a person laughs hard enough they pull both wrists to their chest and open their mouth while rocking back and fourth but stay in their own personal space. Similar to a velocilaughter.

That girl was laughing so hard she was doing the hilariousaurus rex

hilariousaurus rex by FAKmyself August 11, 2016