So this just happened with my calc teacher.
Me: Prom is next weekend I'm just really excited!
Teacher: What's so great about prom?
Me: Well you get to get all dressed up and be really pretty.
Teacher: Are you saying you're not pretty every day?
Me: Well I'm just normal looking every day but really pretty on prom.
Teacher: So it's like a maximum pretty. When the derivative of pretty equals zero.
