Okay, so sometimes people like to make jokes by pretending they don't know how to spell words properly. This is called satirical misspelling. It's like when you pretend to trip on a step, even though you know it's there and you won't really fall.
People do this when they want to be funny or to make a point about something. For example, if someone is talking about how they love hamburgers, someone might say "Oh, you mean hamberders?" even though they know it's spelled "hamburgers."
It's important to remember that this is only meant to be a joke, and it's not something you should do all the time. It's important to learn and use correct spelling and grammar when you're writing for school or for work.