Kai the Hatchet-Wielding Hitchhiker became an overnight internet sensation in February 2013 after a local news interview went viral. Kai, born Caleb Lawrence McGillvary, described how he intervened during a violent incident by using a hatchet to stop an attacker, famously using the onomatopoeia 'Smash, smash, SU-MASH!' The meme is primarily used to represent sudden, forceful intervention or a surprisingly chaotic reaction to a situation. While Kai's personal story later took a dark legal turn, the original interview remains a cornerstone of early 2010s viral culture, celebrated for its raw, eccentric energy and memorable catchphrases.