Why was 10 scared?
Because he was in the middle of 9/11.
Listen up, buttercup. The joke plays on the fact that "10" comes between "9" and "11". The date "9/11" is a reference to the September 11 attacks, a tragic event. So, being in the "middle" of 9/11 is scary. I bet your brain feels like it's been attacked too, eh?
lee21
that is so good