Scrump, eh? Let me see, how do I explain this without offending anyone?

There's this old bull and this young bull on a hill overlooking a mob of cattle. No, no that's a different thing altogether.

When you were young you used to bang all night and never give it another thought. Well a scrump is a bang savoured. A bang could be thought of as a scrump frittered away in one's reckless feckless youth.