About an ambiguous line in 「東京日和」, a song by Komatsu Miho


[The line
sings](https://www.youtube.com/watch?v=tJgztDpKG4w&feature=youtu.be&t=1m38s):

> わざと訛って
>
> あなたが喋るから
>
> ヘンで笑えた
>
> 上達してないね 今も

I am not sure about the (implied) subject of 「上達してない」.

If 'you' were DELIBERATELY speaking with an accent, I guess 「上達してない」 must not
be referring to 'your' pronunciation. Then what can it be referring to? The
ability to refrain from laughing out when someone deliberately speaks with an
accent?

Any romantic suggestions? :)




There seems to be an explanation related to the song's story. From a piece I
found online:

> The Tokyo accent is considered standard Japanese and so speaking another
> accent is referred to as "namaru ('having an accent')"...
>
> ...And as Miho is not from Tokyo, it would show in her accent, which may
> have made her feel like an outsider. So her boyfriend spoke a regional
> accent to make her feel like she didn't have to change her accent to fit
> in...and that would have given her the confidence not to be insecure about
> her strange laugh.

This means that the line 上達してないね 今も refers to the fact Miho still didn't
improve her ability to speak without a regional accent.

