Huh.
#TIL: Some other persons pet peeve is that it is »have another think coming« not »have another thing coming« (if you think this).

Oddly, i seem to have read over the »k« in not-»thing«-after-all a few times in some books.

Also, the graphs are somewhat interesting: The phrase became common only recently, and in British English »think« is still clearly ahead of »thing«.

https://books.google.com/ngrams/graph?content=another+think+coming%2Canother+thing+coming&year_start=1900&year_end=2022&corpus=en&smoothing=3&case_insensitive=false

#idiom #English #anotherThink