My Chibi Usa, What Long Whiskers You Have

Luna and Artemis come up with an idea to fool Rubeus into releasing the Senshi he has taken as hostages. Part of their plan is to disguise themselves as Chibi Usa. They imagine themselves posing as Chibi Usa (saying "I'm the Rabbit, I'm the Rabbit!") and quickly discard the idea. ^__^
Sailor Moon R Episode #74
Kill Rubeus! The final battle in the space void
Rubeus wo taose! Uchuukuukan no kessen