Ask permission of your daughter.
If she responds to the affirmative, yell “LIAR” at the top of your lungs the first time Moochelle lies. It won’t take long.
I used this approach with our local Democratic congresswoman when Obamacare was brought up in a Town Hall meeting. Over half of the audience joined in. I couldn’t talk for a week.
The difference being is that a town hall meeting is is the time and place for political dissent. This is a graduation, and the graduating class deserves better. This event isn't about the OP, it isn't about Michelle Obama, it's about the graduates.