It is completely inappropriate. Family parties are supposed to be family - friendly and modest events. Going naked violates basic social norms and can make family members extremely uncomfortable and embarrassed.
Perhaps she was under the influence of alcohol or some substances that made her lose her inhibitions. Another possibility is that she has some very different ideas about body freedom and family gatherings that are not in line with the norm.
This is a very awkward and unacceptable situation. Firstly, make sure to protect your wife's privacy as much as possible in that moment. After the party, sit down and talk to her about why this is not okay. It could be that she misjudged the situation or there was some misunderstanding, but it's important to set clear boundaries for family gatherings.
It's not common at all. Most social events involve proper clothing for various reasons like modesty and following social norms. Naked hot tub parties are quite out of the ordinary and may even be considered inappropriate in many cultures.
At a party, there could be a lot of things that might seem 'wild'. Maybe there are energetic dancing, loud and exciting music, and people having a great time chatting and laughing. However, the phrase'sexy wife went wild' is rather inappropriate. If we consider it in a more positive and proper sense, perhaps a wife might be really enjoying the party atmosphere, being more outgoing than usual, like joining in group games or showing off her amazing dance moves.
Perhaps she was part of some avant - garde performance art piece in the fictional world of the story. However, this would still be a very controversial and boundary - pushing concept. It could also be that she was trying to make a statement about freedom or break free from some form of social constraint, but it's a very extreme way to do so in the context of a party.
Perhaps the story could be that it's a themed birthday party. The 'naked' part could be symbolic, like a 'naked truth' theme. At the party, everyone writes down a sincere and honest message about her on a piece of paper. They then put these papers in a box, and she gets to read them all. It's a unique way to show love and appreciation on her birthday.
It is not acceptable at all. A party is a place where people interact in a civilized way. Nudity is not part of the normal party scenario. If a wife were to be naked at a party, it would send the wrong message about her values and self - respect. It would also likely shock and alienate friends and acquaintances, and may have long - term consequences on her social life and the way people view her and her family.