If you hover your cursor on the image, the tooltip says, "[audience looks around] 'What just happened? There must be some context we're missing.'"<div><br></div><div>But it does seem to be stretching things, humour value is limited.<br>
<br><div class="gmail_quote">On Sat, Aug 4, 2012 at 8:28 PM, Indy Singh <span dir="ltr"><<a href="mailto:indy@indigostar.com" target="_blank">indy@indigostar.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">
<div dir="ltr">
<div style="font-size:12pt;font-family:'Calibri'">
<div>Close. I just googled it:</div>
<div>
<div>
<div></div>
<div></div>
<div> </div>
<div>Source:</div>
<div><a href="http://www.explainxkcd.com/wiki/index.php?title=Formal_Languages" target="_blank">http://www.explainxkcd.com/wiki/index.php?title=Formal_Languages</a></div>
<div></div>
<div></div>
<div> </div>
<div><a title="Megan" href="http://www.explainxkcd.com/wiki/index.php?title=Megan" target="_blank">Megan</a> is 
standing at the podium of the 10th Annual Symposium on Formal Languages (as per 
the banner behind her). <a title="Cueball" href="http://www.explainxkcd.com/wiki/index.php?title=Cueball" target="_blank">Cueball</a> 
crashes in through a glass pane and shouts "GRAMMAR!" and dashes off. <a title="Megan" href="http://www.explainxkcd.com/wiki/index.php?title=Megan" target="_blank">Megan</a> remains 
at the podium looking perplexed.</div>
<div>
<p>This is a reference to the phrase <a title="wikipedia:Context-free grammar" href="http://en.wikipedia.org/wiki/Context-free_grammar" target="_blank">context-free 
grammar</a>, which is a technical term used in <a title="wikipedia:formal languages" href="http://en.wikipedia.org/wiki/formal_languages" target="_blank">formal language</a> theory. 
The play on words is that <a title="Cueball" href="http://www.explainxkcd.com/wiki/index.php?title=Cueball" target="_blank">Cueball</a> does 
not provide any context for his statement.</p></div>
<div> </div></div></div>
<div style="font-size:12pt;font-family:'Calibri'">Indy 
Singh<br>IndigoSTAR Software -- <a href="http://www.indigostar.com" target="_blank">www.indigostar.com</a></div>
<div style="font-size:small;font-style:normal;text-decoration:none;font-family:'Calibri';display:inline;font-weight:normal">
<div style="FONT:10pt tahoma">
<div> </div>
<div style="BACKGROUND:#f5f5f5">
<div><b>From:</b> <a title="jbl@jbldata.com" href="mailto:jbl@jbldata.com" target="_blank">J. Bobby Lopez</a> </div>
<div><b>Sent:</b> Saturday, August 04, 2012 5:52 PM</div>
<div><b>To:</b> <a title="fulko.hew@gmail.com" href="mailto:fulko.hew@gmail.com" target="_blank">Fulko Hew</a> </div>
<div><b>Cc:</b> <a title="u-u@mail.unixunanimous.org" href="mailto:u-u@mail.unixunanimous.org" target="_blank">Unix Unanimous</a> ; <a title="tpm@to.pm.org" href="mailto:tpm@to.pm.org" target="_blank">Toronto PerlMongers</a> </div>


<div><b>Subject:</b> Re: [tpm] A tad too subtle for me</div></div></div>
<div> </div></div>
<div style="font-size:small;font-style:normal;text-decoration:none;font-family:'Calibri';display:inline;font-weight:normal"><div><div>I 
have a feeling it has something to do with context-sensitive grammer (see <a href="https://en.wikipedia.org/wiki/Context-sensitive_grammar" target="_blank">https://en.wikipedia.org/wiki/Context-sensitive_grammar</a>) 
and formal languages, and possibly that we (the audience) are the 
context.<br><br>That's my best guess.<br><br>-Bobby<br><br>
<div class="gmail_quote">On Sat, Aug 4, 2012 at 4:21 PM, Fulko Hew <span dir="ltr"><<a href="mailto:fulko.hew@gmail.com" target="_blank">fulko.hew@gmail.com</a>></span> wrote:<br>
<blockquote style="BORDER-LEFT:#ccc 1px solid;MARGIN:0px 0px 0px 0.8ex;PADDING-LEFT:1ex" class="gmail_quote"><font face="courier new,monospace"><br></font><br>
  <div class="gmail_quote">
  <div>On Sat, Aug 4, 2012 at 4:15 PM, <span dir="ltr"><<a href="mailto:arocker@vex.net" target="_blank">arocker@vex.net</a>></span> 
  wrote:<br>
  <blockquote style="BORDER-LEFT:#ccc 1px solid;MARGIN:0px 0px 0px 0.8ex;PADDING-LEFT:1ex" class="gmail_quote"><br>Did anybody get the joke in Friday's <a href="http://xkcd.com/1090/" target="_blank">http://xkcd.com/1090/</a> 
    xkcd?<br></blockquote></div>
  <div><br>Not sure, but a mouseover revealed the following hidden 
  caption/titlte...<br>Does it help you? because it didn't help 
  me.<br> <br></div>
  <div><pre><span>[audience looks around]  'What just happened?<span><span></span>'</span> 'T<span><span></span></span>here must be some context we'<span></span>re missing.'</span></pre></div></div><br>

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