Hypersmurf
Moderatarrrrh...
Huh/ I never realized that you couldn't flank with a whip in v3.5. You learn something new every day.
Almost - you can flank with a whip, as long as you're the attacker.
Flanking basically requires three things:
1. Position - Character A and Character B are directly opposite each other.
2. Setup - Character B must threaten the target.
3. Execution - Character A must make a melee attack.
With a whip, you can manage 1 and 3, so you can be Character A, but you can't manage 2, so you can't be Character B.
-Hyp.