I can't imagine youths of today being that bashful and embarrassed of sex so it's fair to assume they took "scrumping" for its archaic meaning and were experiencing the general embarrassment of being around gramps (i.e. anyone over 30) when he starts talking about the good old times and "kids these days".Damn changing slang... though that would explain the very embarrassed youths down the pub a while back when the conversation came around and the older, often highly bearded, participants declared their love of scrumping and how they wish they could do more of it before pondering a session for the sake of old times.