Toph wanted to yell at him, so she did. "That's a crappy name!"

Since The Master was kind enough to leap into the air before he disappeared, Toph couldn't tell that he had disappeared. For all she knew, he would come back down. She waited to feel and hear a thump from his hard landings, but it never came. She had no idea where that crazed asshole went, or how he managed to disappear, but in the end, she really didn't care. At least he had left her alone so she could look for Aang, Katara, and Sokka.