Eventually, this conversation spiraled into a peel vs. unpeel argument. Both words have the definition of “removing an outer covering.” So, which one do you use?
If you were to advocate for peel, then you would mention how peel already has a negative connotation, and thus the un- is redundant. If you were to advocate for unpeel, then you would mention how unpeel refers to removing (negating) the peel of something. Both seem correct in their own lights.
The answer to this dilemma is complex and dives into cognitive science and linguistics. Essentially, because the concept of negation manifests itself in various ways in the English language, English speakers have trouble discerning peel from unpeel.