Okay, imagine you have a bunch of toys that you like to play with, and some of them are really tall and some of them are really short. But when you want to line them up, you don't want any of them to stand out too much, because all of them are important to you.
Well, that's kind of what winsorizing is. It's a way to take a bunch of numbers, like the height of your toys, and make sure that none of them are too extreme compared to the others.
So, let's say you have five toys and their heights are: 5 inches, 8 inches, 10 inches, 13 inches, and 20 inches. The tallest one is really sticking out compared to the others, and it's making it hard to see the differences in height between the others.
But if you "winsorize" the heights by saying that any toys taller than 15 inches should be set at 15 inches, then the toy that was originally 20 inches will become 15 inches, and the others will stay the same. Now, the difference in heights is easier to see, and none of the toys are standing out too much.
Winsorizing is basically about making sure that extreme values don't skew the overall picture of a set of numbers. It's like smoothing things out so that the whole group is easier to understand.