Question: When and where does Frank get kicked in the groin? (Not during "Planet Schmanet, Janet").
Answer: I was told that Tim Curry AKA Frank N Furter was also accidentally kicked in the groin in the pool shot. You can see the look on his face. But it's not clear if Susan Sarandon did it or the actor playing Rocky did it.
Answer: It happens on the stairwell during the song, "You Better Wise Up, Janet Weiss".
Chosen answer: She kicks him in the groin when he has her cornered on the stairway.