The Brief: Sonning a person means to teach them a lesson, often in a humiliating or demeaning way.

DEEP DIVE
To son somebody means to utterly destroy them. For example, legendary band Smash Mouth sonned hip-hop magazine The Source for dunking on mumble rap:
Smash mouth sonning the source over hip hop politics is just where we’re at right now in history I guess lmao https://t.co/TYXHAMNfbo
— dank commander (@haasanbarclay) November 19, 2019