Added 10 more gists.

PlayBall.java/PlayBall.java

@@ -0,0 +1,37 @@
+class Ball extends Throwable { }
+
+class P {
+	private String name;
+	private P target;
+
+	P(String name, P target) {
+		this.name = name;
+		this.target = target;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public void setTarget(P target) {
+		this.target = target;
+	}
+
+	public void aim(Ball ball) {
+		try {
+			System.out.println(target.getName() + ", catch!");
+			throw ball;
+		} catch (Ball b) {
+			target.aim(ball);
+		}
+	}
+}
+
+public class PlayBall {
+	public static void main(String args[]) {
+		P parent = new P("Dad", null);
+		P child = new P("Son", parent);
+		parent.setTarget(child);
+		parent.aim(new Ball());
+	}
+}

PlayBall.java/README.md

@@ -0,0 +1 @@
+[https://xkcd.com/1188/](https://xkcd.com/1188/)