Yeah, no, yeah

Basically, when answering “no” to a question. The only difference is the idiot who answers shakes their head up and down, replying “yeah” to in fact tell you the answer is “no”. Then ending with a “yeah” to confirm the “no” meant “no” again saying “yeah” that the answer was “no”

Me: “is there any reason why you’re such a tool?”
The tool: (shakes head up and down) “yeah, no, yeah.....”