I think the way to analyze the problem is to look at the patron's stay at the club as a series of discrete transactions over time, combined with the ingestion of alcohol over the same period. The patron would argue that at some point he had consumed enough alcohol such that he lacked the capacity to understand the nature and consequences of the particular transaction in question (call it "Point X") and all the transactions after Point X (assuming his level of intoxication stayed the same or increased after Point X).
There are also other interesting issues at play here. Is it necessary for the patron to prove the club knew he was intoxicated to be able to avoid paying? Can the club benefit from its wrongful conduct (that is, serving an obviously-intoxicated customer)?
Professor Farnsworth* thinks little of the patron's cause of action. "Intoxication is usually voluntary ... and courts have often reprobated the party who seeks to avoid on this ground. 'As for the drunkard who is
voluntarius daemon,' moralized Lord Coke, 'he hath ... no privilege
thereby.'" Professor Farnsworth notes that, under the
Restatement (a sourcebook for lawyers and judges to use for general principles regarding contracts), a contract is voidable by reason of intoxication only if the other party had reason to know of the intoxication, as manifested by the drunk party's behavior. I'll also note that, in Texas, voluntary intoxication isn't a defense to criminal liability.
So how would the patron prove when he reached Point X, if ever? Proving what's going on in someone's coconut is often dicey. The patron would bear the burden of proving when he was unable to understand what he was doing. Professor Farnsworth writes that the court may consider the circumstances surrounding the transaction in dispute, the party's behavior during the transaction, his behavior before the transaction, the opinions of laypersons who observed the party's conduct, and even experts. (Maybe the patron can hire Captain Morgan or that dude in the Dos Equis ads as experts -- haha.) I would think that any video shot of the patron in the club that night and the credit card receipts would be relevant.
Professor Farnsworth argues that the dominant factor is "whether the court sees
the particular transaction in its result as that which a reasonably competent man might have made." In other words, COULD a reasonable man have charged $19,000 in a SC? I say sure, why not? We may have different opinions whether the patron received good value for his money, but it's possible he did.
I ran a search through Westlaw. There were a couple of old cases about drunk guys trying to void marriages or conveying a deed, but nothing directly on point.
I read the lawsuit filed by the patron in Florida, which is posted here:
http://www.courthousenews.com/2011/04/26/StripClub.pdf
Not only is he seeking to void his contract to pay the club, he also asserts claims for deceptive trade practices and punitive damages. I can't see how he'll win, but I guess anything's possible.
Finally, the following is the relevant section of the
Restatement:
The Restatement (Second) of Contracts § 12(2) provides, “A natural person who manifests assent to a transaction has full legal capacity to incur contractual duties thereby unless he is ... (c) mentally ill or defective, or (d) intoxicated.”
It further states regarding mental illness,
A person incurs only voidable contractual duties by entering into a transaction if by mental illness or defect
(a) he is unable to understand in a reasonable manner the nature and consequences of the transaction, or
(b) if he is unable to act in a reasonable manner in relation to the transaction and the other party has reason to know of his condition.
Id. § 15(1).
Regarding intoxication, id. at § 16 provides,
A person incurs only voidable contractual duties by entering into a transaction if the other party has reason to know that by reason of intoxication
(a) he is unable to understand in a reasonable manner the nature and consequences of the transaction, or
(b) he is unable to act in a reasonable manner in relation to the transaction.
______________________________
*E. Allan Farnsworth,
Contracts § 4.6 (2d ed. 1990).