Executing code for every method call in a Ruby module

I'm writing a module in Ruby 1.9.2 that defines several methods. When any of these methods is called, I want each of them to execute a certain statement first.

module MyModule
  def go_forth
    a re-used statement
    # code particular to this method follows ...
  end

  def and_multiply
    a re-used statement
    # then something completely different ...
  end
end

But I want to avoid putting that a re-used statement code explicitly in every single method. Is there a way to do so?

(If it matters, a re-used statement will have each method, when called, print its own name. It will do so via some variant of puts __method__.)