Great thread!!
I love this thread, it's even more fun than the Who's Who.
Tigger is my favorite, and I had actually thought up something else (which I can't even remember now) but it was taken.
Tiggerish is either:
(a) a play on Tigger and ticklish (which I am) OR
(b) Tigger plus the nickname my brother has called me ever since he could speak, Ish (we're not sure, we think he might have been trying to say sister, but it stuck, and only he calls me that)