"So we've learned our lesson," Lex said.
"We learned about this in school," Conner mumbled. "This is cruel and unusual punishment."
"And we're not going to orchestrate elaborate escape plans that involve large amounts of collateral damage."
"I don't even care what 'collateral' means," Conner sulked. "It's in the Constitution. You're not allowed to do this to me. My brain is going to leak out of my ears."
His father looked at him appraisingly. "Well, don't get it on the clean towels."
And more reasons here