When people put words in your mouth and start it off with "so what you're saying is ..."
No that's not what I'm saying. That's how you interpreted it.
It's especially annoying because it's always said in a condescending way. And I've seen comments from people on reddit who say they do it on purpose to point out to someone that what they're saying is absurd or doesn't make sense. And sometimes it's used appropriately in that sense, but so many times it's used by someone who is just trying to manipulate another person by using semantics or weaponized ignorance to basically bully them into silence. This becomes especially obvious if they interrupt you when you try to clarify, because they know if they let you explain yourself, they lose the upper hand.