“Why did the leprechaun cross the road?”/“He wanted to reach the pot of gold faster.”

A leprechaun riddle is:
 
Q: Why did the leprechaun cross the road?
A: He wanted to reach the pot of gold faster.
 
The riddle has been cited in print since at least 2003.
 
“When does the leprechaun cross the road?”/“When it’s green!” is a similar riddle with a different punchline.
     
 
Google Books
Community Health Nursing Practice Today Magazine
Department of Community Health Nursing, Obafemi Awolowo University
Volume 1, Issue 1
2003
Pg. 2006:
Why did the leprechaun cross the road?
He wanted to reach the pot of gold faster
submitted by Laura and Kristen
 
KC’s Store
Irish Chips
Turbo
Posted - Mar 17 2008 :  07:38:23 AM
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Why did the leprechaun cross the road?
He wanted to find the pot of gold faster
   
Twitter
goode enuff‏
@goodeenuff
Why did the leprechaun cross the road?  He wanted to reach the pot of gold faster
9:00 PM - 17 Mar 2011
 
Twitter
HamptonF_VMarket‏
@HamptonFVMarket
Time for specials and laughs!
Why did the leprechaun cross the road?
Well, duh! To get to the pot of gold… http://fb.me/2bonzTX5K
9:48 AM - 26 Feb 2013
 
Twitter
Selfiest Elfius‏
@elfmug
Question —Why did the leprechaun cross the road?
  Answer — To get to the pot of gold!
11:38 AM - 11 Mar 2014
 
Twitter
Joan Yazze Gallegos‏
@JoanMarie87
Q: Why did the leprechaun cross the road?
A: To get to the pot of gold!
10:15 AM - 13 Mar 2015