When you attend Professional Development do you:
All these behaviours are the things that most irritate us about our students - need I say more?
If this is you and you are old enough - retire. If not old enough, you may be in the wrong profession!
If teachers are only in the business of teaching and not of learning, then we are seriously stuffed. Not only are any or all of these behaviours discourteous to the presenter, they show a serious lack of commitment to the direction the school has chosen to take.
Writing exercises using spoonerisms, and other quirks of the English language, will help foster a deep understanding of words and terms without soaring your students billy.