I have my ACU licence for that, you wouldn't believe the training process you have to go through. One section was on Slap avoidance and Health and Safety of Bra checking. The worst one is the snap and slap .... there were red faces all around and it wasn't from embarrasment.

By the way ACU is the Assisted Checking of Undergarments.... very useful course if you have an afternoon when the missus is away ... always remember .. duck and weave ..... duck and weave ....