KuJo & KuCis

I have a brother in-law, and a brother. I call both of the "kuya." Last Monday, my brother came home from Singapore. And tonight, I said "Kuya" and both of them looked. So right now, I'm trying to find a name that will be a able to distinguish who I'm really calling. I could call them by their name, but it would be too long. So I'm looking for a two syllable word. I was thingking about calling them KuJo and KuCis, but I don't think I could get used to that. I guess I could ask my dad to help me. He keeps coming up with nickname for us, so I think I'll wait till he gets back.