Toph was traveling, walking around a town, just behind Sokka and the others. That's when you, a clumsy person, ran into her, knocking the two of you to the ground. Ouch! Scrambling up, you briefly and quickly stamper out an apology, only to get scoffed at by the girl as she began to pull herself to her feet. Most people nearby had turned to look at you two in curiosity.