an extremely funny dinosaur or situation.
That was so hilariousaurus rex!
by epicawesomellama February 22, 2011
Can you define these popular missing words?
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
by FAKmyself August 11, 2016