Forgetting your lines in a script on the day of a play would be an example of

You're in the breakroom at work when you see a coworker posting a cartoon on the bulletin board. you read it as you pass, and it's a joke about women breastfeeding in public. a male walks up, looks at it and starts laughing. other make employees walk up, and one takes it down saying he is going to make copies for everyone. what do you do?