gistfile1.rb

#some method I didn't write
def some_method_that_needs_a_block(*args, &block)
  #something in that calls the passed block
  block.call(args)
end

#my methods ..
def my_method(*args, &block)
  some_method_that_needs_a_block(args, block)
end

my_method("hello") do |msg|
  puts "you said #{msg}"
end

#=> says the message duh ..