diff --git a/AUTHORS.rst b/AUTHORS.rst
index b0a7e241..e94a4bff 100644
--- a/AUTHORS.rst
+++ b/AUTHORS.rst
@@ -144,3 +144,4 @@ Patches and Suggestions
 - Jayson Vantuyl <jayson@aggressive.ly> @kagato
 - Pengfei.X <pengphy@gmail.com>
 - Kamil Madac <kamil.madac@gmail.com>
+- Michael Becker <mike@beckerfuffle.com> @beckerfuffle
diff --git a/HISTORY.rst b/HISTORY.rst
index 601ba580..f27ce332 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -7,6 +7,7 @@ Release History
 ++++++++++++++++++
 
 - Updated CA Bundle, of course.
+- Cookies set on individual Requests through a ``Session`` (e.g. via ``Session.get()``) are no longer persisted to the ``Session``.
 - Clean up connections when we hit problems during chunked upload, rather than leaking them.
 - Return connections to the pool when a chunked upload is successful, rather than leaking it.
 - Match the HTTPbis recommendation for HTTP 301 redirects.
diff --git a/requests/cookies.py b/requests/cookies.py
index c465f552..35dacfc4 100644
--- a/requests/cookies.py
+++ b/requests/cookies.py
@@ -378,29 +378,29 @@ def create_cookie(name, value, **kwargs):
 
 def morsel_to_cookie(morsel):
     """Convert a Morsel object into a Cookie containing the one k/v pair."""
+
     expires = None
-    if morsel["max-age"]:
-        expires = time.time() + morsel["max-age"]
+    if morsel['max-age']:
+        expires = time.time() + morsel['max-age']
     elif morsel['expires']:
-        expires = morsel['expires']
-        if type(expires) == type(""):
-            time_template = "%a, %d-%b-%Y %H:%M:%S GMT"
-            expires = time.mktime(time.strptime(expires, time_template))
-    c = create_cookie(
-        name=morsel.key,
-        value=morsel.value,
-        version=morsel['version'] or 0,
-        port=None,
-        domain=morsel['domain'],
-        path=morsel['path'],
-        secure=bool(morsel['secure']),
-        expires=expires,
-        discard=False,
+        time_template = '%a, %d-%b-%Y %H:%M:%S GMT'
+        expires = time.mktime(
+            time.strptime(morsel['expires'], time_template)) - time.timezone
+    return create_cookie(
         comment=morsel['comment'],
         comment_url=bool(morsel['comment']),
+        discard=False,
+        domain=morsel['domain'],
+        expires=expires,
+        name=morsel.key,
+        path=morsel['path'],
+        port=None,
         rest={'HttpOnly': morsel['httponly']},
-        rfc2109=False,)
-    return c
+        rfc2109=False,
+        secure=bool(morsel['secure']),
+        value=morsel.value,
+        version=morsel['version'] or 0,
+    )
 
 
 def cookiejar_from_dict(cookie_dict, cookiejar=None, overwrite=True):
diff --git a/test_requests.py b/test_requests.py
index a800ba71..093b37c1 100755
--- a/test_requests.py
+++ b/test_requests.py
@@ -6,15 +6,16 @@
 from __future__ import division
 import json
 import os
-import unittest
 import pickle
+import unittest
 
 import requests
 import pytest
-from requests.auth import HTTPDigestAuth
 from requests.adapters import HTTPAdapter
-from requests.compat import str, cookielib, getproxies, urljoin, urlparse
-from requests.cookies import cookiejar_from_dict
+from requests.auth import HTTPDigestAuth
+from requests.compat import (
+    Morsel, cookielib, getproxies, str, urljoin, urlparse)
+from requests.cookies import cookiejar_from_dict, morsel_to_cookie
 from requests.exceptions import InvalidURL, MissingSchema
 from requests.structures import CaseInsensitiveDict
 
@@ -1004,5 +1005,64 @@ class UtilsTestCase(unittest.TestCase):
         assert not address_in_network('172.16.0.1', '192.168.1.0/24')
 
 
+
+class TestMorselToCookieExpires(unittest.TestCase):
+
+    """Tests for morsel_to_cookie when morsel contains expires."""
+
+    def test_expires_valid_str(self):
+        """Test case where we convert expires from string time."""
+
+        morsel = Morsel()
+        morsel['expires'] = 'Thu, 01-Jan-1970 00:00:01 GMT'
+        cookie = morsel_to_cookie(morsel)
+        assert cookie.expires == 1
+
+    def test_expires_invalid_int(self):
+        """Test case where an invalid type is passed for expires."""
+
+        morsel = Morsel()
+        morsel['expires'] = 100
+        with pytest.raises(TypeError):
+            morsel_to_cookie(morsel)
+
+    def test_expires_invalid_str(self):
+        """Test case where an invalid string is input."""
+
+        morsel = Morsel()
+        morsel['expires'] = 'woops'
+        with pytest.raises(ValueError):
+            morsel_to_cookie(morsel)
+
+    def test_expires_none(self):
+        """Test case where expires is None."""
+
+        morsel = Morsel()
+        morsel['expires'] = None
+        cookie = morsel_to_cookie(morsel)
+        assert cookie.expires is None
+
+
+class TestMorselToCookieMaxAge(unittest.TestCase):
+
+    """Tests for morsel_to_cookie when morsel contains max-age."""
+
+    def test_max_age_valid_int(self):
+        """Test case where a valid max age in seconds is passed."""
+
+        morsel = Morsel()
+        morsel['max-age'] = 60
+        cookie = morsel_to_cookie(morsel)
+        assert isinstance(cookie.expires, int)
+
+    def test_max_age_invalid_str(self):
+        """Test case where a invalid max age is passed."""
+
+        morsel = Morsel()
+        morsel['max-age'] = 'woops'
+        with pytest.raises(TypeError):
+            morsel_to_cookie(morsel)
+
+
 if __name__ == '__main__':
     unittest.main()