〜ったら・〜ってば
honestly, (person)!; I told you!
Noun + ったら (exasperated topic) · Sentence + ってば / ったら (insistence)
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ったら and ってば are casual particles full of feeling.
After a person, ったら marks an exasperated or affectionate complaint: もう、お母さんったら、勝手に部屋に入らないでよ, "honestly, Mum, don't just come into my room!". It's the casual cousin of ときたら.
At the end of a sentence, ってば (or ったら) insists impatiently, when you've already said something: 分かったってば, "I said I get it!", or 早く行こうってば, "come on, let's go!".
Both come from という plus a conditional, "if I say…". They're spoken, informal and common in anime, manga and family conversation.
Don't confuse them with plain って, which quotes or means "called".
Examples
もう、お母さんったら、勝手に部屋に入らないでよ。
Honestly, Mum, don't just come into my room!
分かったってば。今やるから。
I said I get it! I'm doing it now.
早く行こうってば。
Come on, let's go!
うちの子ったら、また宿題を忘れたのよ。
Honestly, my kid's forgotten his homework again.
大丈夫だってば。心配しないで。
I told you, I'm fine. Don't worry.