Cool irb feature in ruby 2.4+

cool_irb_feature.rb

require 'irb'

class TroublesomeClass
  def method_making_a_fuss(bad_argument)
    return if bad_argument == false
    
    binding.irb # you enter a repl where you can `puts bad_argument`
  end
end

TroublesomeClass.method_making_a_fuss('yolo')