Earlier quoted context omitted.
Is there case law that shows verbal acceptance of contracts are legally binding?
Email and Oral acceptance of terms can be legally binding in contractual agreements. You don't need to dig up a civil court case to know that verbally accepting a contract without intending to fulfill it is naive and potentially dangerous.
It looks like (from basic research) that verbal acceptance IS legally binding (in the US anyway).
The trouble with verbal agreements is they can be problematic to enforce.