Imagine that your character goes out to eat with friends. He orders a number of drinks, appetizers, an entree and a desert. The food is delicious. The service excellent.
The bill comes. Each person has to contribute their fare share, with tax and tip.
What does he do? You have to decide whether or not he contributes his fair share.
What happens if he tips amply but the others don’t? Does he say something?
What happens when all but one friend pays with cash but the remaining one pulls out a charge card? Does he say something to make sure his ample tip is paid?
On the other hand, what if your character doesn’t pay for all he ordered? How do the others feel? What do they say and do?
Your task is to write the story.
Have fun with this one.