“Handbooks” are usually not about hands, but sometimes they are. “I’m quite the expert on palmistry, I’ve written a handbook” was posted on Twitter by sikjokes2011 on July 18, 2011. “I’m such an expert on palmistry, I’ve written a handbook” was posted on Reddit—Oneliners on August 8, 2019.
   
A book titled

by Rosa Baughan has gone through several editions since the 1880s.
 
 
Wikipedia: Palmistry
Palmistry, or chiromancy (also spelled cheiromancy; from Greek kheir (χεῖρ, ός; “hand”) and manteia (μαντεία, ας; “divination”), is the claim of characterization and foretelling the future through the study of the palm, also known as chirology, or in popular culture as palm reading. The practice is found all over the world, with numerous cultural variations. Those who practice chiromancy are generally called palmists, hand readers, hand analysts, or chirologists.
   
Twitter
sikjokes2011
@sikjokes2011
I’m quite the expert on palmistry, I’ve written a handbook http://bit.ly/pDlEAa
5:20 PM · Jul 18, 2011·twitterfeed
   
Twitter
Kat
@katia75014
I’m quite the expert on palmistry so I’ve decided to write a handbook.
4:51 AM · Aug 9, 2014·Twitter Web Client
   
Twitter
Jim McClenning
@jimbomcc
I’m quite the expert on palmistry, I’ve written a handbook
4:31 AM · Aug 7, 2018·Twitter Web Client
   
Twitter
Jokerswild
@JokersWildUK
I’ve become quite the expert on Palmistry.
In fact I’ve written a handbook!!
5:59 PM · Jun 5, 2019·Twitter for Android
   
Twitter
Spock Thornaby🖖
@Spock_Thornaby
I’m quite the expert on palmistry. In fact, I’ve written a handbook.
2:57 AM · Aug 8, 2019·Twitter Web App
 
Reddit—Oneliners
Posted by u/honolulu_oahu_mod August 8, 2019
I’m such an expert on palmistry, I’ve written a handbook.