A line dancer riddle is:
 
Q: What do you call a line dancer on a cruise?
A: An ocean liner.
 
The joke has been cited in print since at least 2007.
 
     
SL-T.net
Category: Dance jokes
Date Added: 11/10/2007
Joke: Q. What do you call a line dancer on a cruise?A. An Ocean “Liner”
 
Twitter
sharron_piedrah‏
@sharron_piedrah
Q. What do you call a line dancer on a cruise? A. An Ocean “Liner”
8:22 PM - 14 Sep 2009
     
Google Books
Sensible Nonsense.. Frank’s Comic Pack:
Humour Pack Series
By Frank Paul
BookBaby
2014
Pg. ?:
“Q. What do you call a line dancer on a cruise?A. An Ocean ““Liner”“”
     
Twitter
Jokeify-it‏
@jokeify_it
Q. What do you call a line dancer on a cruise? A. An Ocean “Liner” #line #Liner -
1:00 PM - 19 Feb 2017
 
20 December 2017, News Mail (Bundaberg, Queensland), pg. 15:.
What do you call a line dancer on a cruise?
An ocean liner.
 
Twitter
Midlands Arts Centre (MAC)‏Verified account
@mac_birmingham
What do you call a line dancer on a cruise? An Ocean “Liner”.
#BadjokeFriday One thing we know for sure is that @jossarnottdance Triple Bill will be alot better than our jokes: http://ow.ly/BRQ730hSr8w
7:25 AM - 19 Jan 2018