as i said, it involved Lupin getting cursed by an Egyptian mask he stole. It's really not much, just "Fujiko, wake up" "mmm" "kitchy kitchy" "heh stop it"
*slaps my forhead* i just remembered! there's ANOTHER tickle scene in the 1st episode of the 1st series! u know, the one with that tickle machine! At the very very end of the ep, Fujiko's driving along with Lupin in the passenger seat, and he takes out this litle stick with a hand on it, and....well, i PRESUME he starts tickling her with it, cuz it cuts away to the car swerving about comically as Fujiko's all "Ah! No, Lupin, stop it!" as it fades to credits.