Me: "Do you know where the word 'toddler' comes from?"

Loving girlfriend: "Yeah, it's because the kid toddles around."

Me: "A common misconception. It's because the kid has reached the age to drink beer from a 'tod' - a stein."

Loving (though now dubious) girlfriend: "No, it's not."

Me: "Here, let me prove it."

Me: searches Internet high and low for vindication. Finds none.

So, my question to you, dear readers, is this: whence did this crazy idea pop into my head? I don't think I merely dreamt it. I hope you can help me regain my sanity and unbruise my ego.