“What exactly are you blabbing about?” Mr. Adeleke's voice was cold.

“If you have something to say, then say it. Instead, you're standing there gloating about a once-in-a-lifetime awakening of what appears to be momentary intelligence.”

He glared across the laboratory at Mr. Fayemi. Fayemi's smirk didn't disappear. Mrs. Adeshakin sat nearby, apparently uninterested in their exchange. She had already learned that getting involved in their arguments usually created more problems than it solved.

Unfortunately, her silence only encouraged Fayemi. “That’s rich coming from Mr. Know-It-All.” Fayemi crossed his arms.

“You can't even figure out something this obvious.” He shook his head dramatically.

“But what do I know?” His smirk...