I've never really had to think about object vs subject in native English since it's always come naturally for me, and I barely remember grammar studies when I was a child.
It seems to be important to mark subject and object properly in Japanese so I'm trying to understand how it works in the following example:
Is Baikinman the object here since "got fat" was the action that happened to him? Baikinman is the receiver of the action of getting fat?
Or is Baikinman considered the subject? If that's the case then what would be the object here? If nothing is acting on him becoming fat?
Can someone explain this in simple terms for me?