From 8d0f066a8798758a23b302f3f425f7d7e943891a Mon Sep 17 00:00:00 2001
From: Jay Hayes <ur@iamvery.com>
Date: Tue, 17 Sep 2013 10:27:56 -0500
Subject: [PATCH] Mug#sip raises error if Mug is empty

* An empty mug can't be drinked from unless you like drinking _AIR_!
:sparkles:

[#1337]
---
 mug.rb | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mug.rb b/mug.rb
index 28a0fc4..a957a23 100644
--- a/mug.rb
+++ b/mug.rb
@@ -20,6 +20,7 @@ def empty?
   end
 
   def sip
+    raise "You're all out of #{content}" if empty?
     @percent_empty += 1
   end
 end