Government incentives have led to several reverse brain drains, as expatriate researchers and engineers return home to start companies.

Despite her sharp wit, after a long day she often complains of having a brain like a sieve.

Science fiction authors often imagine Matrioshka brains harnessing the energy of entire stars to run limitless simulations.

Old sailors called him a jingle-brains for his wild, thoughtless antics on deck.

The old chronicler's notes explained that jingle brains were a derogatory name for pickpockets in the market.

When the council ignored the evidence, commenters on social media ridiculed them as smooth brains.

Scientists programmed several electronic brains to simulate human decision-making during the experiment.

When teaching neuroscience, she used models of triune brains to explain how different systems interact.

Her shit-for-brains idea cost the company thousands.

I can't believe he forgot the tickets again — the guy's a total shit-for-brains.