Sherlock was looking at her. He didn't see himself as not normal, just more clever than everybody really. He huffed at her comment. He didn't need to be normal anyway. He was looking annoyed when she waved the sandwhich in his face.
"I don't need to eat as often." He said firmly. His stomach was still growling in protest.
He wondered partly if he should go get some food. Not when she was around. He didn't want to give in infront of her.

He was drinking his coffee "Like I said, don't need them." he knew he was being stubborn. He knew he was feeling rather dizzy and sick from not eating. He looked at her, he sighed there was no way he could get away from her just yet.
So he seemed to continue being stuborn about whether he needed anything. He knew that it would probably start to annoy her. But he didn't really care. He wondered if she would put up with it or whether it would drive her off.

Sherlock huffed, well of course John knew the answer. He didn't really care what John thought about this sitution. He didn't want to work with Mae and that was final. He liked John, but sometimes John did push him into things he didn't want to do.
So being nice to some new detective wasn't going to happen. Sherlock always drove alot of people away, it was probably the reason he stayed single not allowing anybody to fall in love. He had pushed away Molly when she had feelings for him. It was like he couldn't recongize such feelings.