Contracts are not automatically valid just because you signed them, though. For example, if I buried a clause stating that you transfer all your assets to me s

Contracts are not automatically valid just because you signed them, though. For example, if I buried a clause stating that you transfer all your assets to me somewhere deep inside my website's Terms of Use, there is no way in hell I will be able to enforce that. It would be considered an "unconscionable contract", and it would be voided. An on-topic example would be Uber v. Heller, where an arbitration clause in the contract was ruled unconscionable, and as a result the plaintiff was allowed to file a class action lawsuit against Uber. Similarly, clauses can be deemed unconscionable because they are an "unfair surprise". An example is Williams v. Walker-Thomas Furniture Co, where the fact that Williams did not understand the contract was considered to be a major factor for the contract being unenforceable. So yeah, when it comes to a contract between an individual and a large business, "I didn't read it and assumed it to just be the standard legalese stuff" is in fact a valid defense.