Step 1: Save

Step 2: Load

Step 3: Press any key and your save button at the same time

Step 4: Repeat until your into the ceiling, don't go too high

Step 5: Find an area to drop down, there are very few of these areas and can be hard to find

Step 6: Go low to the point where you are about around halfway through the floor

If you want to go back to your original height, simply save and load like normal

Try to find useful exploits for this glitch and try to share it with other people

I made a video if you want to see: