Explain · Like I'm five version
Pensions in terms of a slow cooker
A pension is just a big slow cooker you keep in your kitchen to make a yummy meal for when you are much older.
You start by putting a tiny bit of food into your slow cooker every single day while you are busy growing up. It looks like a very small amount at first, maybe just one pea or a lonely carrot slice, and you might wonder why you are bothering at all. But just like a slow cooker, the trick is to put the lid on tight and then walk away to do other things like playing with your toys or learning your ABCs. You have to be very patient and let the magic happen all by itself.
Inside the pot, your little bits of food start to bubble and grow into a big, hearty stew because of something called interest. Think of this like a friendly kitchen fairy who sneaks into the pot when you are not looking and adds a little bit more yummy stuff every day. After many years, the small pieces you added at the start have turned into a giant, delicious feast that is ready to eat exactly when you are too old to run around the garden.
The best part is that you do not have to watch the pot or stir it, because that would just make it cold. You just let it sit there while you live your life, confident that your future dinner is getting bigger and tastier every single minute. It is the most boring way to make a meal, but it is the only way to make sure you have enough to share with your friends when you are a grown-up.
Where the analogy breaks downA slow cooker does not accidentally lose half its contents if the stock market has a bad week.