Wingers must get it to the byline and whip it into the mixer, where their efforts will be met with concussive force by the forehead of a burly centre forward. This is the law. Ideally, they should be willowy, somewhat effete individuals who occasionally display 'silky skills' or 'tricks' that result in them being horribly mangled by an outraged full back and left in a crumpled heap on the running track.
Proper football, that.