One sw engineer that was inspired by the Apple team that hid their team picture in the code.
I did not know that Pamela worked for LeCroy
We had also an incident with one of our products.
Some debug info that should never be seen popped up at a customer.
It was not offensive but still quite embarrassing.
The sw engineer was fired for this, in the code review it was not found because he put it after a comment line on the same line behind the 120th column and he made a small change in the comment.
The code reviewers only see the first 120 characters and thought the change was the comment change.
So it was a deliberate act of hiding which cost him his job.
Warning for young players: management usually does not think eastereggs are funny