WAT is a zero-dependency Python library for deep runtime inspection of objects. It provides a single `wat` object that can be used via `wat / obj`, `wat(obj)`, or `obj | wat` to display the object's type, value, attributes, methods, signatures, docstrings, source code, and more. The library supports a rich set of modifiers (short, long, dunder, code, caller, public, all) that can be chained fluently. It also offers `wat.locals` and `wat.globals` to inspect variable scopes. A notable feature is the ability to load the entire inspector without installation via a base64-compressed snippet or even a single Unicode glyph, making it extremely portable for debugging in any Python environment. The codebase is a single well-structured module with comprehensive test coverage, demonstrating solid Python engineering practices including operator overloading, AST manipulation for minification, and careful handling of edge cases in object introspection.