...Instead of it being a pseudo mind control / berserk, it should give you full control over your character and only make the character that taunted you targettable, and if you don't attack that character during your turn, the taunt would prolong itself for another turn or give you another penalty, and each turn you ignore it, the penalty would get worse and worse.
This is an interesting idea... I like it.
The current penalty for being taunted appears to be missing your turn and watching your character go crazy on all your scrolls or potions. Which is infuriatingly funny in its own right.