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

How to pretend to be sick after school 
Look a bit grumpy when you are picked up from school. 
Say your day was fine up to midday. 
Put your hands around your stomach.
About five minutes after you've been picked up, wrap your arms around your stomach and say you have a little bit of a stomachache. Moan a little, but don't overdo it.