I don't get what you mean OR Nonsense
I go to school by bus is a piece of comment made by non-native English readers referring to a piece of passage that make no sense. Broadly adapted in Hong Kong since it is a sentence appear in a commonly used primary English language coursebook.
a common phrase used to express fuck u, or an excuse not to travel to school together
example 1
lachlan: can u grab me a bottle of water rq?
lucas: i go to school by bus
example 2:
andrew: wanna walk to sch together?
tyler: i go to school by bus