Brain loaf /breɪn ləʊf/: The slowing of brain activity to a near flat line after eating a meal high in refined carbohydrates (read: white bread sandwich, or toast)
e.g. Sorry, I used my mobile phone after a gas leak. I’m such a brain loaf.
or After eating my birthday cake solo, I’ll definitely have a brain loaf.
or I left my cat home alone to babysit my pet goldfish for half a day. I guess I brain loafed…