For checking the transcript: https://www.buzzsprout.com/2379282

Mind-bending

describes something that is so complex, surprising, or difficult to understand that it feels like it twists or challenges your brain.

Examples:

1- My friend tried to explain how cryptocurrency works, and it was so mind-bending that I gave up after five minutes.

2- Quantum mechanics is full of mind-bending ideas—particles can be in two places at once!