Meaning
What does Truck-Kun mean?
Truck-kun, also referred to as Truck-sama or Truck-chan is a popular moniker given to trucks and camions which are involved in fatal accidents in anime and manga series.
It started seeing widespread use, after users on the r/manga subreddit realized that truck accidents were used as a device for propelling the plot.
Origin
What's the origin of Truck-Kun?
An early case of “Truck-kun” emerged in April, 2015, in a thread titled “Trucks in Manga” in the r/manga subreddit.
A comment, written by Reddit user shwag945 said “oh truck-kun you are my favorite plot device”.
Spread & Usage
How did Truck-Kun spread?
Within a short period of time, the name “Truck-kun” became a frequently used nickname for trucks, with users on Reddit as well as 4chan conversing about which character they’d introduce to “Truck-kun” as well as pondering upon the kill count of “Truck-kun”.

External resources
- Cashinganime.com – Truck kun: The Most Prolific Serial Killer
- Anime-planet.com – Truck-kun