Step 1: Get the page
Step 2: Open the webpage.
Step 3: Editing a page
Say I wanted to edit "I like chicken" to "I don't like chicken" and change the comment from "I do also" to "I hate chicken". We will also change the name from Instructable guy to yo mama and the time to I don't know O'clock
First, go into notepad and press Ctrl+f to open the find menu. Type in what you want to edit to find it in the HTML code and change it to what you want it to say.
If you look to the left of the code for whatever you edited you should see something that says wotsearchprocessed and just to the right of that the name of whoever posted the thing. You can change this to something like Yo Mama. However I don't know how to change the profile picture of this person. Perhaps someone could post it as a comment if they know.
If you look to the right of the thing your editing you should see written "10 minutes ago" or something along the lines of that. You can type in whatever you want here also.
This should work for both posts and comments.
The only problem with this method is that sometimes it may stuff up the chat box.