Now, that's a good one.
I always felt awkward about this "bug-eyed lying titty primitive" bit, but it was the best I could devise, myself.
The "bug-eyed" was okay, but I'm sure the "lying titty" was too deep for most to understand the derivation, which of course was "TomInTib" = "TiT" = "tit" = "titty."
I'm always for improvements on names with which I baptize the primitives.