We had some problems with updating some entries into a new database at a place I used to work with the wrong thing being put in the wrong box. Until the techies could redesign that bit and as a temporary measure to get my point across, I put some dialogue boxes on which used to drive the staff mad which went something like:-
Are you sure you want to do this - Y/N
Are you really sure that this information shouldn't be in the *** box - Y/N
Are you so sure that this is right you would stake your first born on it? Y/N
Are you so positive this is right that BM is not going to scream at you for four days and huff and puff round the office - Y/N.
The boss was the worse one for cocking it up so I had an extra one that said "John, if you are reading this, click "no" and do not touch BM's database again. Now put your feet up and someone will make you a nice cup of coffee".