A British term, given to someone who says something stupid or makes a stupid remark, usually due to living a sheltered life and having little exposure or knowledge about the world around them.
When the something, someone, you are pointing out is directionally diagonal across an intersection from you. Not accross either street from you but diaganol across both streets. See Kitty Corner.
Someone who is addicted to obtaining money and building wealth. A money addict and fanatic. Breadheads often work more than one full-time job, and some even participate in illicit activities to "obtain the bread".