This is a test of commonsense. Complete the next sentence:

How to vomit politely
When you have to vomit, say you have to use the restroom, and go vomit in the toilet.
Then flush the toilet and wipe your mouth. If there is a water fountain nearby, you would probably want to get a drink.
If no restroom is available, ask to be excused. Then, leave to find a bush, tree, rock or anything big that you can hide behind.