I'm with BigJim on this one. Any kind of baby-tickle-talk drives me absolutely insane, and not in a good way. It annoys me to no end.
As for taunts I DO like.....As a lee, I love it when my ler threatens me with just HOW BADLY I am gonna get it, and the fact I can do nothing about it. I also tend to be very smart mouthed and sarcastic to instigate my tickling torment, so a phrase along the lines of "See if you ever smart off to ME again!" gets me giggling like a child. Besides those two, silly humor and/or voice impersonations are KRYPTONITE for me. Anyone who does voice impersonations, or uses silly humor while tickling me, has a double advantage, and can turn me to absolute jello before ever laying a finger on me. Combine it with tickling, and I am dead. (GuitarPeteTklr can expand more on that if he replies to this thread....he has first hand experience with using that weapon on me). As a ler, I'm not too much of a vocal taunter. I do occassionally like to wiggle my fingers inches above their skin and pull the "What are you laughing at?? I'm not even touching you!" line. Also, if I find a spot that gets a particularly good reaction, I'll usually come out with something like "Oooooooo...did I find a WEAKNESS? Is THIS a good spot? Right here? Ooooooo I am gonna stay on this spot a while. I LIKE this spot."
As far as the phrase in question goes though, I also have no idea. I think Strel may be onto something though.
Mimi