lol I did it too once! We were making a PoC one time for a small app, and ended up needing a way to quickly determine some location information related to the zip. I remembered that I saw the ~5mb bundle once that had all the zipcodes in it, and found a library that would let me do that, and bundled it right in.

The PoC ended up working out, and we built the infra to correctly handle the lookups without needing to bundle the entire country from there, but man did that raise some eyebrows from a few other devs that noticed it!