Verbal contracts often do not stand up in court because, once a dispute over an alleged contract reaches the litigation stage, both parties usually have a different story about the terms of the agreement.
However, oddly enough, an implied contract is usually enforceable in a lawsuit. An implied contract is one in which there is no verbal consent to the terms of a deal. Instead, agreement is understood based on the circumstances of the arrangement.
For example, an engagement ring is legally considered a gift in anticipation of one specific event - an eventual wedding.
If the engagement is called off, the ring is the legal property of the person who purchased it, because the binding factor of eventual marriage is no longer present.