diff --git a/two-fer/lib/two_fer.ex b/two-fer/lib/two_fer.ex
index 24ad791..b461da1 100644
--- a/two-fer/lib/two_fer.ex
+++ b/two-fer/lib/two_fer.ex
@@ -1,8 +1,11 @@
 defmodule TwoFer do
+  @moduledoc """
+  `Two-fer` or `2-fer` is short for two for one. One for you and one for me.
+  """
+
   @doc """
   Two-fer or 2-fer is short for two for one. One for you and one for me.
   """
   @spec two_fer(String.t()) :: String.t()
-  def two_fer(name) do
-  end
+  def two_fer(name \\ "you") when is_bitstring(name), do: "One for #{name}, one for me."
 end
diff --git a/two-fer/test/two_fer_test.exs b/two-fer/test/two_fer_test.exs
index d557738..82b64c3 100644
--- a/two-fer/test/two_fer_test.exs
+++ b/two-fer/test/two_fer_test.exs
@@ -5,31 +5,26 @@ defmodule TwoFerTest do
     assert TwoFer.two_fer() == "One for you, one for me."
   end
 
-  @tag :pending
   test "a name given" do
     assert TwoFer.two_fer("Alice") == "One for Alice, one for me."
   end
 
-  @tag :pending
   test "another name given" do
     assert TwoFer.two_fer("Bob") == "One for Bob, one for me."
   end
 
-  @tag :pending
   test "when the parameter is a number" do
     assert_raise FunctionClauseError, fn ->
       TwoFer.two_fer(10)
     end
   end
 
-  @tag :pending
   test "when the parameter is an atom" do
     assert_raise FunctionClauseError, fn ->
       TwoFer.two_fer(:bob)
     end
   end
 
-  @tag :pending
   test "when the parameter is a charlist" do
     assert_raise FunctionClauseError, fn ->
       refute TwoFer.two_fer('Jon Snow')