Found it!
I’ve had a line from the Simpsons in my head for a while, but wasn’t sure of the exact wording. Today it occurred to me (at the right moment) to search for it on the interweb. Not only did I find the wording, I also found this!
[from Treehouse of Horror XV — remember the translating machine? I can’t remember if it was meant to translate for babies or animals or what. So the first part of the clip is the crazy lady speaking, and the second part is the machine translating what she said.]
[Now, have I overexplained the joke enough to ruin it? Ok.]