An exclamation used to the effect of 'fuck off', 'piss off', 'go away' or anything else in that vein. The word "ram" is also a versatile substitute for swearing, suitable for use in class. It can be used as a noun, an adjective, a pronoun, a verb and several more.
1. Guy: You've got a face like a smacked arse, ya bawbag!
Other guy: Ram off ya rammin' rambag!
2. Guy: Ooh, that was a hard hit!
Other Guy: Aye not as hard as I Rammed yer ma last night, mind!