Indicates and/or emphasizes that something is correct, right, or reliable. Refers to 17th-century English arithmetician Edward Cocker. Primarily heard in UK. Now that I've read over my thesis five times, I am quite sure it's free of errors and completed according to Cocker! The car leaking that much oil does not seem to be according to Cocker—I think you should take it to the shop as soon as possible.