To your 12ish son whom you suspect of cheating in the volleyball game you have organized between him and his much younger brothers: "I'll come right out on that court and whup your ass! You are embarrassing me [in front of the other guests]!"
To your 7ish sons, who have not yet internalized the principles of zone defense and have lost a point in the volleyball game by both going after the ball: "If you do that again I'm going to stop the game and you're going to spend the next two hours practicing math."
To your 6ish daughter, who has just asked if she can sleep in the big room with two beds: "No. That's the room where I'm storing my bicycle."
Glad I went on vacation, glad I'm back.