The saplings are a community of subscribers from a YouTuber called InTheLittleWood, also known as Martyn.
A "sapling" is what Martyn calls his subscribers.
To fill ones belongings with potatoes, but most commonly a golf bag throughout an 18 hole round of golf. Usually includes collusion between the other three members of the foursome against the victim.
A Tonbridge sacking is when you ram your scrotum violently into a woman’s vaginal canal during sexual intercourse. It’s a right of passage to becoming a man in Tonbridge.