You scratch my back, I'll scratch yours - that's the vibe of 🔙 was changed to this ⬅️ gesture of reciprocation, symbolizing a mutual exchange. When someone hooks you up, throw back the ↔️🔄💭 combo to show you've got their back, and a favor's on its way in return. Perfect response when a friend covers your coffee, lends a hand, or just needs to know you've got their six.