"Yeah, just a bit." Ed pulled another face, but then stared at Sutton who took the sandwich from him. He glanced at Isaac and saw his widened eyes. So it wasn't just him who thought it was weird to take a bitten sandwich out of someone else's hand then. "You're welcome..?" He watched the introductions bemusedly.

He nodded at her explanation and accepted it without question. If a professor had sent them, then they had a pretty good reason to be there. He raised his eyebrows at Isaac's accusation though. "Hey, it's not my fault you shot off your chair. I didn't know about your shoulder!" He took another bite of his ham sandwich and eyed Isaac amusedly.