What were the most memorable ways that a fellow recruit screwed up and/or pulled a wrong move at Basic Training, or other fields of military training?

It doesn’t have to be just at basic training; it can be at technical, flight, the Navy Nuke School, and other training centers recruits go to after Basic. (And even at officer academies.)

To give you an idea of what to tell us, some examples might be:

1. Attempting to try on their drill sergeant’s/DI’s/MTI’s hat.

2. After being ordered to clean someplace with a toothbrush, turned out to be their drill sergeant’s toothbrush.

3. Pulling a prank on a drill sergeant and being found out who the prankster(s) was/were.

Etc.

So please tell us what they did, and what their sanctions/punishments were. (If they instilled a group punishment, what was it and how did it feel for you?)