Another U2 nut!
Acrobat
Just say, "yeah whatever," and just walk away. Even if you feel like jumping to U2's defence (as well you should!) just ignore your brother. He wants you to get upset and chuck a wobbly. That's what brothers do. Turning around and walking away will peeve him off no end! And then if he's not gettin a rise outta you, he will give it up!