The developers in my team room seem to swear a lot at what they're working on. I thought jokingly that we need a swear jar. Then I thought of having an opaque

The developers in my team room seem to swear a lot at what they're working on. I thought jokingly that we need a swear jar. Then I thought of having an opaque jar, labeled "Swearing Jar." When you put money in, it spits it out and says "fuck off," or some other randomly chosen insult.