“What do you say to a leprechaun?”/“How’s the weather down there?”

“How’s the weather up there?” is a jocular line said to a tall person. A leprechaun version has been cited in print since at least 2001:
 
Q: What did the leprechaun say to the elf?
A: “How’s the weather up there?”
 
A different leprechaun version was cited in print in 2003:
 
Q: What do you say to a leprechaun?
A: How’s the weather down there?
 
         
Kidsjokes.co.uk (June 24, 2001)
St Patricks Day Jokes
What did the leprechaun say to the elf?
“How’s the weather up there?”
 
Google Books
Community Health Nursing Practice Today Magazine
Department of Community Health Nursing, Obafemi Awolowo University
Volume 1, Issue 1
2003
Pg. 2006:
What do you say to a leprechaun?
How’s the weather down there?
 
Google Groups: alt.humor.jewish
Jest For Kids Weakly 03-16-04
Stan Kegel
3/21/04
(...)
What do you say to a leprechaun?
How’s the weather down there. (Emily and Aaron)
 
Google Groups: Holladay-4
Dessert Social, where the drinks are always on us.
amesbury
3/13/09
What do you say to a leprechaun?—“How’s the weather down there?”
 
Twitter
Beverly Schmitt‏
@BeverlySchmitt
Q.  What did the leprechaun say to the elf?
A.  “How’s the weather up there?”
10:40 AM - 17 Mar 2009
 
HubPages
St Patricks Day Jokes and Riddles For Kids
By Lela Davidson
Updated on March 26, 2012
(...)
What did the leprechaun say to the elf?
How’s the weather up there?
   
Best Blog For Kids Who Hate To Read
Time to Laugh: St. Patrick’s Day Jokes
March 14, 2014 Gail Terp
(...)
What did the leprechaun say to the elf?
How’s the weather up there?
 
Twitter
Alan S Harrell‏
@ashtexas
What did the leprechaun say to the elf? . . . “How’s the weather up there?”
8:08 AM - 17 Mar 2016
 
Twitter
edenc‏
@Carleden0
“How’s weather down there ,little leprechaun?”
BETWEEN US ARE MAXIMUM 20cm ! HOW COULD THE WATHER BE HERE ?! REALLY
3:00 PM - 9 Jun 2016