technically there's 3. in the second series (which u can find on Cartoon Network's Adult Swim every morning at 5 am [that's right, i said "am"]), there's an episode where Lupin went crazy from an Egyptian mask, and Fujiko went to save him. At the end, when he's cured, he finds Fujiko unconcious in the sand. To wake her, he pokes her head a bit and says "kitchy kitchy". She laughs EVER-so slightly while saying "stop it" and wakes up. Not much.
One episode in the 2nd series that was in DESPERATE need of a tickle scene was one where Fujiko's singing could attract the Loch Ness Monster. Fujiko is captured by a mad scientist who wants to use her singing so he can capture Nessie. She refuses. She's chained to the wall of a dungeon, and he begins to torture her to get what he wants. I prayed "please God, tickle her! Please God!" But NOOOOO! YOu know what he does? He takes this hook and begins scratching the dungeon wall, making that "nails on a chalkboard" sound we all know and hate. Nevertheless, it seems pretty effective, as she's screaming "No! No! Please stop it, you fiend!"
ps. I have the entire 1st series on dvd in their original japanese, so unlike everyone else here, I don't have to put up with these terrible spanish-dubbed clips! MWAHAHAHAHA! 😀