Ruby: define_method vs. def

Question

As a programming exercise, I\'ve written a Ruby snippet that creates a class, instantiates two objects from that class, monkeypatches one object, and relies on method_missin

Answer 1

def method_missing(m)
    self.class.class_exec do
       define_method(:screech) {puts "This is the new screech."}
    end 
end

screech method will be available for all Monkey objects.