Ash Dex Meme

Maybe he just wants to hear how Unova Dex describes Piplup. He does it again in the second episode of Alola; he says to Rotom-Dex "I want to hear how you describe Pikachu", implying that a Pokemon he's scanned before...he might scan again in a different region to see how their Pokédex describes the same Pokémon. Just what I think.