If you’re talking to your parents, you could say, “I’ve had diarrhea, and I’ve vomited. I feel really sick. " If you’re talking to someone you’re not as close to, you could say, “I’ve had stomach. . . issues today. I’m feeling pretty bad. "

You could also add some light moaning now and then. However, if you’re at work, moaning may be a bit much.

At work, just running to the bathroom every now and then should be sufficient.

You can also warm up a thermometer by running it under warm water or drinking a warm drink before having your temperature taken in your mouth.

If you’re out somewhere, try putting on a sweater, or rubbing your arms like you can’t get warm.

At work, you could try popping tums or asking co-workers for medications.

However, don’t immediately perk up. You may still have to do what you wanted to get out of, but you’ll just be late.