Proof of voice and identity (male voice)

"Now, can I PLEASE see Mr. Miller?"

"Uh..." The receptionist muttered, fidgeting in her chair. "You uh... you wear that body well. I guess."

"Thanks?" Walter said like it was a question. "Mr. Miller?"

"R-Right. Say, if you're free tonight, wanna..." The receptionist asked, teasing Walter as he grabbed a cup of water. "Mr. Miller, Professor Schmidt is here! Just to warn you in advance, he has changed a lot. In looks..." She said, giggling to herself.

"Shush." Walter grunted, his gruff male voice appearing a bit misplaced coming from his new body. The receptionist giggled as she stood up and opened the principal's door ever so slightly. "Might eavesdrop a bit, fair warning."

"Don't you do that anyway? The walls aren't that thick, you know." Walter joked, pushing open the door with a grin.

"What... What is going on?! You are NOT Mr. Schmidt! My receptionist must have made a mistake! I SWEAR!!" The Principal, Mr. Miller shouted, jumping up from his desk.

"Yeah. Hear me out. And just to be on the safe side..." Walter trailed off. "I'm me. See? Or... hear, I guess?" Walter asked. "Here's my ID. Receptionist wouldn't believe it." Walter sighed, sliding his staff ID on the desk. "And why I look like, well, this... Look who I caught during, well-" Walter continued before being cut off by the headmaster.