The part when they take Vision to Wakanda to have the mind stone extracted, the team is trying to figure out how to go about it. Then Shuri says "Why didn't you do this?", and Bruce FUCKING Banner just says "Um, I didn't think of it?" because that makes perfect sense he would have given zero thought to a seemingly obvious solution.

Watch for yourself: https://www.youtube.com/watch?v=RDuVv6DCb5w