crazy_ruby_procs.rb

def a(p)
  p.call()
  raise "The world is safe"
end

def b
  x = Proc.new { return Proc.new { return false }  }
  a(x).call
  raise 'Maybe here, we might save the world. Let us do that.'
end

def c
  b
  raise 'Bang! Nuclear explosion. You are dead.'
end

c #=> Would you expect this to destroy the earth?