Home Rules of Boozing Rule 28. If you can’t afford to tip, you can’t afford to... Rules of Boozing Rule 28. If you can’t afford to tip, you can’t afford to drink in a bar. Go to the liquor store. By Frank Kelly Rich - FacebookTwitterPinterestWhatsApp Rule 28. If you can’t afford to tip, you can’t afford to drink in a bar. Go to the liquor store.