title: can I use two access tokens for a single facebook FQL / graphAPI query?
body: <p>For example, I want to run this graph api query:</p>
  
  <pre><code>/userA/mutualfriends/userB&amp;access_token=what do I put here?
  </code></pre>
  
  <p>the query above should give me the mutual friends of userA and userB, so how to supply both access tokens for userA and userB? </p>