Glancing at the other’s feet to know whether they want to talk to you or not
Even though you might have something important to tell someone, it doesn’t mean that the other person wants to hear it. You can tell almost 100% of the time whether someone is actually engaged in conversation with your or is looking for a polite way to end the conversation by looking at their feet.
If they point their feet in your direction while standing, chances are they’re interested in what you have to say. If their feet are pointed in another direction while they face you, it’s time to end the conversation and bid them adieu. Don’t take things personally. They might have to leave because they’re short on time.