Matthew Kane came up with it. I asked him (again, since I’ve forgotten) and he said, “It was a mashup title of In-A-Gadda-Da-Vida and the Krell from the movie Forbidden Planet: https://en.wikipedia.org/wiki/In-A-Gadda-Da-Vida https://en.wikipedia.org/wiki/Krell
And this was before the word mash-up existed!”
And if you don’t know Iron Butterfly’s song, In-A-Gadda-Da-Vida: