2 brothers were fighting, when one called the other stupid. The other brother said 'really, whats 9+10?' The answer was 21. It was followed by 'you're stupid' 'no i not' and then someone made a song about it, and it was popular. Thats what i was told anyways

9+10=21 song on you tube.

21 what?

No, seriously. What's so funny about it?

nothing

LOLOLOLOLOL