>>3
This fact is easily demonstrated:
"In the [Pokemon] anime, Caterpie as the first Pokémon Ash ever caught in his trainer career, as well as the first to evolve, and it eventually evolved into a Butterfree and was later traded for a Raticate on the S.S. Saint Anne but is traded back later in the episode. Ash releases it later so it could mate with a pink Butterfree."
Caterpie leads to Butterfree, trades in for Raticate.
"Cat pee" leads to "butt free", trades in for "bat cape".