It's the word hilarious broken down, so as to emphasize just how hilarious something is. It's 100 times more intensified than something that is just funny. You have to emphasize every syllable.
I talked my friend John into rollerblading down the hill behind my parents house...needless to say he wiped out. Huh Larry Us!!! Funniest thing I've ever seen!
ayon kay wirelessgrl ika-20 ng Disyembre, 2010