The responsibility of presenting your bottom

Once your dad has determined that you need a spanking, it is his responsibility to administer it, but it is your responsibility to ensure your bottom is properly presented to receive the punishment.

Your dad will issue instructions on how you are to prepare, including his requirements for the
positioning of your bottom.  He may require you bent over a chair or table, or possibly just grabbing your ankles, but whatever he decides you must follow his instructions to the best of your abilities.

It is in fact a matter of pride for a boy to present his bottom.  You can be very proud if your bottom presents the "perfect target" for your dad.

The positioning of the boy's bottom is to make the spanking as convenient as possible for dad. 

I always try to present my bottom exactly how my dad wants.  Complete obedience is always a good idea immediately prior to getting a spanking!!

However, there is also some self interest in how you present your bottom.  Your dad has selected the position because it is going to make it easy for him to administer your punishment and included in this is his accuracy.  It is much better for the boy if the strokes land exactly where they are supposed to - across his bottom - and the correct position certainly helps this.