Yips is when someone is doing an activity, like playing golf or throwing a ball, and suddenly they can't do it right anymore. It's like their body forgets what to do even though they've done it many times before.
Sometimes people get the yips because they're nervous or under a lot of pressure. Other times, it just seems to happen for no reason at all. It can be really frustrating and embarrassing for the person because they might know how to do the activity perfectly, but their body just won't listen.
It's like when you're learning how to tie your shoes and you get it right every time, but then one day you just can't remember how to do it. It's not that you don't know how to tie your shoes; it's just that your brain and your fingers aren't working together the way they usually do.
People who get the yips might feel like giving up, but it's important to remember that it's not their fault and they can still improve with practice and patience.