I once saw a clip of Shannon Doherty being ganged up on by the other girls-it was in the beginning of an episode and they came up from either side of her and kind of "fake" tickled her ribs....I wish I had taped it, but I must say that it didn't seem that real, though that could just be my memory.
Is that the episode where Shannon Doherty touches this guy who feels everyones pain and she inherits his problems by touching him. I didn't see the episode, but didn't one sister tickle another sister while she (Shannon Doherty) was touching her so that way she didn't feel the pain, but rather tickling? That's what it sounded like on the radio trailer when I heard it in my car.