Purple prose refers to writing that uses too many fancy, flowery, or complicated words and phrases that try to sound impressive but actually make the writing harder to understand. It's like when you're trying to tell a story but you use so many big words that your friends can't follow along.
Just like how some people wear clothes that are too flashy or wear too much jewelry, some writers write with too many ornate words and phrases that can distract from the story they're telling. Purple prose can make the writing harder to read and harder to understand.
It's important to remember that writing is like a conversation between you and your readers. If you use too many fancy words and complicated phrases, it's like you're trying to show off and make it harder for your readers to follow along. It's better to use simple, clear language that your readers can easily understand.