Lucy v. Zehmer
Supreme Court of Appeals of Virginia
84 S.E.2d 516 (1954)
While drinking at a bar, A.H. Zehmer (defendant) and W.O. Lucy (plaintiff) discussed for forty minutes Lucy's offer to buy Zehmer's farm for $50,000, an offer Lucy had made and Zehmer had refused several times before; Zehmer drafted a sale agreement on a bar receipt, revised it at Lucy's request to include title-examination terms and his wife's signature, and had his wife sign it after privately whispering to her it was a joke - a joke never communicated to Lucy. Zehmer accepted Lucy's $5 down payment before realizing Lucy was serious, at which point Zehmer claimed the whole thing was a joke; Lucy successfully raised $50,000 and completed a title check, but Zehmer refused to close, and Lucy sued for specific performance, which the trial court denied.
Whether the actual mental assent of the parties to an agreement is necessary to form a valid and enforceable contract.