Using your own analogy, I’ll complete it for you. When you found an issue winding the watch you then decided to open the case back, your case back tool slipped so marked the back of the watch, then once opened up you then decided to prod and scrape at bits of the movement causing further damage.
You then quietly put the case back back on, printed out a sign stating “Nothing to see here, move along” and returned the watch under the pretence that watch was “shit” so anything that you did beyond discovering a problem doesn’t matter as it’s covered by your “shit” statement.
Now read it all back and convince yourself that you are still in the right?