The motorcycle is irrelevant.
Tenmil Sokhet is a real person who happens to have a photo of a Honda 50cc Cub as his profile pic on Facebook.
The joke is simply that his dad, Mr Sokhet, chose to name his son Tenmil.
But other than that I'm missing the joke as to how that applies to the motor bike!
Murray
The motorcycle is irrelevant.
Tenmil Sokhet is a real person who happens to have a photo of a Honda 50cc Cub as his profile pic on Facebook.
The joke is simply that his dad, Mr Sokhet, chose to name his son Tenmil.