Phoenix has a habit of unwittingly adopting the mannerisms of the people/(thing/animals) around him!

Here we have him accidentally slipping into Meekins mode, Money the monkey mode (canonised by the anime ;)) and he picks up the singing schtick from everyone else in the courtroom without even realising it initially in SOJ case 1.

(Another example might be when you had to choose from “I reckon so / I reckon no” to say to Lotta during Turnabout Goodbyes. Depending on which you choose, she gets angry at you and accuses you of mocking her accent).

I feel like there must have been other times as well when Phoenix has unwillingly/accidentally picked up another character’s idiosyncrasy (“great, now they’ve got me doing it!”) (or even some more examples of how the answers you get to choose from get changed around sometimes like the “I reckon so” example), so if any others come to mind feel free to add to this post!