Where does the 13th guy go to or come from?

[Delbert]

Count and then wait a few seconds -- then look again --
Text

 

[Looney]

LOL that's fvcked up.

 

[LinuxIdiot]

damn company firewall i cant see what happens

 

[flxnimprtmscl]

Weird.

 

[Howard]

Hmm...

 

[Beau]

Repost

 

[GoingUp]

The guy on teh far left never moves... thats how you get the 13th.... you cut part of his hair off to get the 13th guy

 

[labgeek]

bottom right guy - in the 12 configuration has a whole head. In the 13 configuration has 1/2 head plus a neckline from his shirt that you take to be the bottom part of his head.

 

[xxAgentCowxx]

*gets excited and urinates on self*

 

[Noirish]

It took me a while to figure, but it's not hard.
I have the color version.

 

[Spooner]

boggled