Grammar fix
come off it
stop being silly or unbelievable
Used to tell someone to stop saying something that is hard to believe, silly, or not true.
Hear it in context
Notice where the phrase sounds natural.
Come off it, there's no way you finished all that work in one hour.
If my friend said he could speak five languages fluently after just a year, I’d probably say, 'Come off it!' because that sounds impossible.
Fix the pattern
One small grammar move makes it sound right.
Not: Come off it this story, it's not true.
Say: Oh, come off it — that's not true.
It's a fixed exclamation; you can't attach an object to it.
Which sounds natural?
Tap the one a native speaker would say.
When you flatly reject an unbelievable claim in speech, 'come off it' is the natural dismissal; the polite paraphrase loses all the punch.
Build natural chunks
Words that usually travel with it.
come off it (+ challenge)
- come off it!
- oh, come off it
- come off it, you