Alex stopped as Professor Black turned, and met his eyes without flinching. "Yes sir..." He waited until his teacher turned, then followed him down the corridor.
"It's been a few months since I had anything," he said quietly. "But I can taste it every day. I haven't had anything, even held anything, in ages. I..." He shook his head. "I couldn't resist."
Alex stopped, staring down at the floor. "No, that's not exactly right. I didn't want to." He tightened one hand around the strap of his bag, then headed off after Professor Black again.