Semantic satiation is when a word is repeated so many times that it starts to lose its meaning. It's like when you say a word over and over again, and it doesn't sound like a real word anymore. It happens because our brains get used to hearing the same word over and over again, and it starts to feel like background noise. This can happen with any word, but it's most common with words that we use frequently. So, if you keep saying the same word too many times, it won't have the same impact on you. It's like when you say your name over and over again, and it starts to feel weird or meaningless.