You know, the word "Murp" is a pun to the word "burp"!
Invention of the word "murp"
Nickelodeon Magazine claimed the use of the word "Murp" in an October 2008 issue. There was an article called "What's Your Caveman Name?" The caveman name for first names starting with M was seriously "Murp!" So, that means if I were a caveman, I'd also be a Murp at the same time...LOL WatermelonSunshine (talk) 01:06, November 29, 2014 (UTC)