I’ll clarify 
DH and I were having a light hearted debate about who was going to sort the garden out this afternoon (there are weeds growing out of weeds, and we have guests coming this week)
DH said that if I thought he was doing it today ‘I had another thing coming’.
I pointed out the phrase was ‘another think coming’ and that he should now go and do the garden as punishment for his failure. 
However, he is insisting I am wrong and that ‘thing’ is the right word. I say that doesn’t even make sense! What ‘thing’ is coming?? He just says ‘English doesn’t always make sense.’ (Not technically his first language but he has a British parent so has always been bilingual and is completely fluent)
MN jury needed. Who is correct??
Loser will obviously be doing the garden. Winner will sit down with coffee and biscuits, looking smug and saying 'you've missed a bit.'