An intoxicated buyer made an offer on a house.

An offer made by an intoxicated buyer is not inherently illegal; rather, it reflects a lack of capacity to enter into a contract. Contracts are not deemed illegal simply based on the intoxication of one party; they may be valid unless specific legal restrictions apply, which is not the case here.

A void contract is one that is considered invalid from the outset and cannot be enforced at all. In this scenario, the intoxicated buyer's offer is not automatically void; rather, it is voidable, meaning the buyer retains the right to affirm the contract if they choose to do so once sober.

A unilateral contract involves a promise made by one party contingent upon the performance of an act by another party. The buyer's offer does not fit this definition, as it is a proposal to form a bilateral contract, where both parties must agree to the terms for it to be enforceable.