Owen

[minor maple]

Please be patient

Our volunteers look into many questions every day; sometimes it takes them a little while to answer.

Pro tip: you can rename the thread title with `.tr <thread name>`

Make it descriptive, including relevant context, but also to the point. This way you improve your chances of getting a more relevant and specific answer.

[trail zenith]

Probably because « s'y reprendre » is idiomatic?

[thick prairie]

This isn't a pronominal use.
In fact, it's normally "on ne m'y reprendra pas/plus" which means "I won't get caught out like that next time". The idea is, the person will have to be careful about that, the situation serves as a lesson for them.
Here, we don't have the negation, which means it's an ironic use.

[trail zenith]

oh my goodness I did not see that it was « on m'y reprendra » and not « on s'y reprendra »