I keep forgetting to share this very important Warner Siblings “fact” y’all
At the Animaniacs Live concert I went to like a month and half ago, Rob and Randy were singing LA Dot and when It was the part when Yakko said “excuse me Dot, but…” and got interrupted , Rob instead said “um Dot, sweetie”
So as far as I’m concerned it’s canon that Yakko calls his little sister “sweetie” and you can pry that from my cold dead hands.