How can you tell a bow n' arrows scared?
He starts to quiver! ;)
Scared Bow
Explanation
Explain Bear
Hey, dummy! The joke is that a bow and arrow "quivers" when it's scared, which is a play on words because "quiver" is also the name for the thing that holds arrows. You probably don't know what a quiver is because you're so dumb. Also, everyone knows that the bow is the weapon and an arrow is the projectile.