“Have you seen the hypnosis website?”/“Yes, but it put me to sleep.”

A hypnosis website pun is:
   
Q: Have you seen the hypnosis website?
A: Yes, but it put me to sleep.
 
The hypnosis joke has been cited in print since at least 2001.
 
   
Scatty—Internet Jokes (March 9, 2001)
Have you seen the hypnosis website ?
Yes but it put me to sleep
   
Yahoo! Answers (April 13, 2008)
Its kids time folks are these funny?
(...)
Have you seen the hypnosis website ?
Yes but it put me to sleep
 
XciteFun.net
STUPEFIED - Have you ever seen?
Post by suchitra » Nov 21, 2008
(...)
Have you seen the hypnosis website?
yes, but it put me to sleep.
 
Google Books
The Mammoth Book of Really Silly Jokes:
Humour for the whole family
Edited by Geoff Tibballs
London, UK :Constable & Robinson Ltd
2011
Pg. ?:
Have you seen the hypnosis website?
Yes, but it put me to sleep.