2 problems: how do I get my scouts badge and how do I deal with my girlfriend's brother?

I'm in the Boy Scouts and I'm close to getting my knot tying badge, but I need to show a creative way of using the knots. I'm trying to brainstorm ideas with my girlfriend but her annoying older brother won't leave us alone. We're the same age so he doesn't mess with me all too often, but he bullies my girlfriend and my patients is wearing thin. What do I do?

2 problems: how do I get my scouts badge and how do I deal with my girlfriend's brother?
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