“You can’t take something off the Internet, It’s like taking pee out of a pool”

It’s often said that you can’t take something off the internet. A memorable line was said in the American television sitcom NewsRadio, on the episode “Physical Graffiti” that aired on March 24, 1996:
 
“You can’t take something off the internet. That’s like trying to take pee out of a swimming pool. Once it’s in there, it’s in there.”
 
 
Wikipedia: NewsRadio
NewsRadio is an American television sitcom that aired on NBC from 1995 to 1999, focusing on the work lives of the staff of an AM news station. It had an ensemble cast featuring Dave Foley, Stephen Root, Andy Dick, Joe Rogan, Maura Tierney, Vicki Lewis, Khandi Alexander and Phil Hartman in his final regular role before his death.
     
IMDb (The Internet Movie Database)
NewsRadio (1995–1999)
Physical Graffiti
23min | Comedy, Romance | Episode aired 24 March 1996
Director: Patrick Maloney
Writers: Paul Simms (created by), Josh Lieb (teleplay) |
(...)
Quotes
Joe: You can’t take something off the Internet. It’s like taking pee out of a swimming pool.
 
Google Groups: rec.arts.sf.tv.quantum-leap
Debbie: her music and her tits
Hanson
4/18/96
Kat Freymuth

wrote:
>Please somebody take this damn thing off of this newsgroup!  It has
>absolutely no place here!
>
 
Sorry, Kat.  As they said on News Radio, you can’t take something off the internet—it’s like taking pee out of a pool.
   
Google Groups: rec.sport.skating.ice.figure
TOC Phoenix
Tracie Bezerra
6/16/96
(...)
“You can’t take something off the internet.  It’s like trying to get pee out of a swimming pool.” —Joe on “NewsRadio”
 
Google Books
The Myspace.com Handbook:
The Complete Guide for Members and Parents
By T. Brian Chatfield
Ocala, FL: Atlantic Publishing Group, Inc.
2007
Pg. 76:
“You can’t take something off the Internet - it’s like taking pee out of a pool.” -Author Unknown, 1995
 
YouTube
NewsRadio - Can’t Take Something Off The Internet
Helen J
Uploaded on Jan 9, 2010
NewsRadio clip, episode 2x17 ‘Physical Graffiti’.
“You can’t take something off the internet, that’s like trying to take pee out of a swimming pool. Once it’s in there, it’s in there.”
 
Google Books
Release Your Inner Old Fart
By Mark Leigh
London” Michael O’Mara Books Limited
2012
Pg. ?:
‘You can’t take something off the Internet – it’s like taking pee out of a pool.’
UNKNOWN