“I went to a seafood disco last week…and pulled a mussel”

A popular seafood pun is:
 
“I went to a seafood disco last week…and pulled a mussel.”
 
The “pulled a mussel/muscle” pun has been cited in print since at least 2003.
 
   
Google Groups: alt.support.depression
OT: A Laugh
Whateverafter
11/4/03
(...)
I went to a seafood disco last week…. and pulled a mussel.
 
Google Groups: alt.humor.puns
Puns of the Weak 05-17-04
Stan Kegel
5/25/04
(...)
I went to a seafood disco rave last week…and pulled a mussel. (Judy K.)
 
Google Groups: alt.books.dean-koontz
Seafood Disco
Cranky Cat
7/8/04
I went to a seafood disco last week…..
and pulled a mussel.
 
Google Books
April 2010, Boys’ Life, ‘Think & Grin,” pg. 56, col. 3:
Tobin: What happened to your leg?
Matt: I went to a seafood dance last night.
Tobin: And?
Matt: I pulled a mussel!
Matt Kent, Omaha, Neb.
   
Google Books
The Mammoth Book of One-Liners
By Geoff Tibballs
London: Constable & Robinson Ltd
2012
Pg. ?:
I went to a seafood disco party last week and pulled a mussel.
 
Google Books
Of Wit N Humour
Compiled by Vincent Thnay
Lulu Press, Inc. (Lulu.com)
2015
Pg. ?:
I went to a seafood disco last week ... and pulled a mussel.—Unknown
   
North Devon Journal (UK)
The 21 worst jokes of all time, celebrating “Tell an old joke day”
By NDJJournal2 |  Posted: July 24, 2015
(...)
9. I went to a seafood disco last week… and pulled a mussel.