A pirate riddle is:
 
Q: What’s a pirate’s favorite school subject?
A: Arrrrrrrrrrt.
     
The art joke has been cited in print since at least 2003.
     
 
Karma-Lab Forums 
Pirate Jokes
kahrayzee
26-Jun-03, 04:15 PM
(...)
what is a pirates favorite study subject?
arrrrrrrrrrrrrrrrrrt.
     
TribalWar Forums
Deranged humor [list all of your jokes]
MadBoFo
09-04-2004, 06:19 PM
what is a pirates favorite class?... ARRRRRRRRRT
(...)
What is a pirate’s favorite subject at school? Aaaarrrithmatic
     
ACA Message Boards
Re: The Pirate Week
Dasha
#60346 - 06/02/05 06:02 PM
(...)
Q: What is a pirates favorite study subject?
A: Arrrrrrrrrrrrrrrrrrt.
 
Google Groups: Soccer Stalkers
pirate jokes
the weak link
1/17/06
(...)
And heres one for Kaptian K-Nook:
Q - What a pirate’s favorite subject in school?
A - Arrrrrrrrrrrrrrrrrt.
(I know that one is weak but it has relevance in K-Nook’s everday life)
 
6 July 2006, Journal & Courier (Lafayette, IN) “A pirate’s life for me?: Hollywood has everyone lining up to walk the plank, but true pirate history is more than just yo ho ho and a bottle of rum” by Tim Brouk, pg. D1, col. 2:
From the toy plastic sword she uses as an ice scraper to new pirate jokes like “What is a pirate’s favorite school subject? Aaarrrrt,” the pirate life seems innocent and fun.
   
Twitter
Jenni Leder 👩🏻‍🎤‏
@thoughtbrain
What’s a pirate’s favorite subject in school? AAaaaarrrrrrrrrrrt!
11:30 AM - 19 Sep 2008
     
Twitter
Pixels Are Zen‏
@pixelsrzen
@findingsane aye lassie, ‘tis that fateful day! (Quick: What is a pirate’s favorite subject in school? AAARRRRithmetic! har har harrrr)
7:15 PM - 19 Sep 2008
 
Twitter
Amy Kalinchuk‏
@soapcrone
What is a pirate’s favorite subject in college? Arrrrrrchaeology.
8:40 PM - 19 Sep 2008
 
Twitter
Ernie Cooke‏
@ErnieWV
Question: What is a pirate’s favorite subject? Answer: Arrrrrrrrt
5:09 AM - 20 Mar 2009
 
Google Books
Laff-O-Tronic School Jokes!
By Michael Dahl
North Mankato, MN : Stone Arch Book, A Capstone imprint
2014
Pg. 28:
What is a pirate’s Favorite school subject?
Arrrrrrrt!
   
Google Books
Fun Pirate Jokes For Kids
By Peter Crumpton
PeteyRF Creative
2015
Pg. ?:
A pirate’s favorite subject is Arrrrrrt!
 
Google Books
LOL:
A Load of Laughs and Jokes for Kids
By Craig Yoe
New York, NY: Little Simon
2017
Pg. 68:
Q: What is a pirate’s favorite subject in school?
A: Arrrrt!
   
Reddit—Jokes
What’s a pirate’s favorite school subject?
submitted March 14, 2017 by 1010821317
Arrrrrrrrt.
 
Twitter
Clinton Reese‏
@FreeRuckus
What’s a pirate’s favorite school subject?
Arrrrrrrrrrt #TalkLikeAPirateDay
11:52 AM - 19 Sep 2017