The copy editor is in.
I'm presenting occasional posts on the use of English,
not to be pedantic but just for the fun of language.
This is one that bothers me when I see or hear it wrong because the original is so sly and humorous, and the "correction" is so dull.
This is the phrase in use:
"If he thinks he's going to get out of paying for that llama, he's got another think coming!"
Too often lately I see it instead as "If he thinks … he's got another thing coming."