I'm all yours.
1. All yours - Something is alright for someone to use.
2. When someone says 'I'm all yours', it means someone is ready.
😯: Can I use your dictionary?
😃: It's all yours.
😯: Are you ready to go?
😃: I'm all yours.
📱 Grammar Test - Android goo.gl/HQna9y
📱 Grammar Test - iOS goo.gl/B5Vchx