yea, we have something on this site called an "edit" button.
Now to put it mildly, what the "edit" button does is it allows you to change your post whenever you feel the need to. You may say to yourself, "Oh my god, I totally forgot to include the word "mother fucker" in my post." Well this may be a problem right? You have to ask yourself, is this problem worth taking 5 seconds to correct? Maybe so. If your answer is a big "yes," then what you need to do is click that "edit" button on the right side of your screen. You then change your post however you may see fit and simply click "save changes" button at the bottom of the screen.
This has been another installment of Deep Thoughts with LC