Even after repeated explanations, the durr-brains still couldn't grasp the concept.

The meeting was ruined when those lame-brains started arguing about trivial details.

Don't listen to those lame brains; they don't know what they're talking about.

The marketing campaign preyed on our reptilian brains, triggering fear and urgency to drive quick purchases.

Left-brained scientists sometimes underestimate how much right brains contribute to creativity.

The conference organizer was frustrated when the panel turned into a shouting match among feather-brains.

Some cosmologists worry that Boltzmann brains could outnumber ordinary observers in a vast thermal universe.

The octopus's peripheral brains coordinate the movement of each arm independently.

Don't call him a shit for brains just because he forgot the meeting time.

Those two dick-brains kept interrupting the presentation until the boss lost his patience.