One's movement from one place to another, or just advancing in a certain task or direction. Created by by a young Yorkshireman named Andrew Swinson, commonly known as 'Swinny'.
"I say Ell, are we brayin' on to the black horse lad?"
"Now then Ell, what's t' job? Are we gonna bray on inside for some suasage rolls, ham sandwich like? Good do."
"Reyt Ell, you're not gonna bray on out in them brothel creepers toneyt are you lad?"
"Are we braying on?"
"Aye, bray on!"