Meaningless statement

A Meaningless statement is an argument which does not posit anything of such substance that it can be agreed or disagreed with. Most famously some claim that the existence of God[?] is a meaningless statement.

Less controversial examples:

"An orange is an apple which has many idiosyncratic features; such as color, texture, taste, internal structure and chemical composition."

"I am wearing clothes made of totally unobservable fibers."

Often it is totally impossible to prove that a statement is meaningless, because usually such statements are offered in bad faith to begin with.