Place it as the verdict after the mistake is shown, following a confused reaction such as Ceeday Huh, then let a Wrong Answer Game Show sting close the sequence. For a follow-up, add Nelson Ha Ha after the verdict to turn the call-out into a shared laugh.
About this sound
A flat, deadpan voice delivers the line 'you have a problem in your brain' in just over two seconds, with no music or background noise to soften it. The delivery is direct and deliberately unimpressed, so the insult hits immediately and without ceremony. It feels funny because the judgement is so absolute, turning a silly mistake or bad take into a sharp, instant response.