Well, here is an interesting and Earth shattering question for you. What would you do if you were presiding over a massive and well attended meeting in which your presence was not only expected but really necessary and you suddenly had to use the porcelain throne? How would you modestly extend relief to your facilties and yet do so in a dignified way?
As usual just a question which popped into my head.
That would almost affect his credibility in court.
I've been preaching at the pulpit for many years and I still, to this day, hate being in front of people. The very thought brings "irregularity" about twenty minutes prior to meeting start. I've made it a habit and point to make a pit stop at the throne before each meeting.
I think, however, in response to the query: you go with honest and humor. Frankly, those are EXACTLY the situations that God invented humor for, as you just illustrated. There is an exactly right joke that buys you the escape you need. Not only with a bit of humor at your expense as the cost of the escape, but with the deepening of the relationship with your audience who suddenly see you, the "man behind the microphone" as real, just like them.
As long as your speech is credible and valuable and reassertes your authority as an expert on the topic, you lose NOTHING in having that moment and have a chance to win them deeply. Those are the moments that show them who you really are.
People buy from people. I imagine that sales truth translates pretty well to what you do too.
True, I am 5'3" and use that to my advantage. I like to make people laugh and often use my "abnormalities" as the punchline. Sometimes I'll stand up at the pulpit and say something to the affect of "Don't worry, I am already standing", or "I hope my big nose doesn't obscure your view." Humor is awesome!