I was looking on Google and found these two:
The first one is Jessie from Team Rocket getting tickled by Butch, I think.
http://www.angelfire.com/anime3/shinigamizvc/tickle.jpg
This next one I'm not sure who it is.
http://downwardspiral.horo-horo.net/art/fanart/tickle.jpg
Enjoy the spoils of my hunt.
The first one is Jessie from Team Rocket getting tickled by Butch, I think.
http://www.angelfire.com/anime3/shinigamizvc/tickle.jpg
This next one I'm not sure who it is.
http://downwardspiral.horo-horo.net/art/fanart/tickle.jpg
Enjoy the spoils of my hunt.