This exchange highlights a clever play on words involving the concept of double negatives in English. The teacher's statement suggests that using two positive elements in a sentence doesn't create a negative meaning, which is typically true in standard English. However, the student's response, "Yeah, right," effectively employs a form of sarcasm, where a tone of disbelief or irony implies that they actually disagree or find the statement false.
It's an interesting illustration of how language can be playful and nuanced! The phrase "Yeah, right" is often used to convey skepticism, thus adding another layer to the teacher's original assertion about positivity and negativity in language.