“My last boss was a dwarf. He was a real micromanager”

A “micromanager” is someone who pays attention to the smallest (“micro”) details. The term doesn’t mean a “small manager,” but there have been several jokes.
 
“If your boss is a midget, it’ll mean something completely different if you say to someone, ‘my boss is a real micro-manager’” was posted on Twitter  on February 26, 2009. “I would hate to have a midget boss because he would be a real micromanager” was posted on Twitter on February 1, 2010.
 
“My last boss was a dwarf. He was a real micromanager” was posted on Reddit—Jokes on November 3, 2017.
 
       
Investopedia
What is a ‘Micro Manager’
A micro manager is a boss or manager who gives excessive supervision to employees. A micro manager, rather than telling an employee what task needs to be accomplished and by when, will watch the employee’s actions closely and provide frequent criticism of the employee’s work and processes.
 
Twitter 
Greg Rutter‏
@greg_rutter
If your boss is a midget, it’ll mean something completely different if you say to someone, “my boss is a real micro-manager.”
10:03 AM - 26 Feb 2009
   
Twitter
A.J.‏
@crazyaejay
I would hate to have a midget boss because he would be a real micromanager.
6:15 PM - 1 Feb 2010
 
Twitter
One-Knee Dr. Romeo‏
@FromRightField
My boss is both a dwarf and a pain in the ass.  It’s because he’s a micromanager. - Christophe B. Romeo
4:36 PM - 12 Jun 2010
 
Twitter
Will Smith‏
@i_am_hancock
If you had a midget as a boss could he be considered a micro manager?
9:51 AM - 15 Aug 2012
 
Twitter
Barbara Spiegel‏
@akaBarni
If you had a midget boss would he be known as a micro-manager?
*B’dah Bump*
9:10 PM - 29 Aug 2013
 
Twitter
Andy Atterbury‏
@Anderbury
My old boss was a midget.
He was a complete micro-manager.
12:33 AM - 27 Oct 2013
 
Twitter
Sarcasmica‏
@simply_aweful
My midget boss hates it when I refer to him as the micromanager.
5:51 PM - 12 Oct 2015
 
Reddit—Jokes
My last boss was a dwarf
submitted November 3, 2017 by Roonerth
He was a real micromanager