When I was a kid, I once faked a stomachache, so my granny would let me stay home. I’ve always been a bad liar, so she tried to call my bluff: she told me if I was too sick for school, then she’d be scheduling me a Dr’s appointment.
3 hours later, I was rushed into ER for immediate surgery. My fake illness was actually appendicitis, and it was so inflamed that if I hadn’t come in that day, my appendix would have ruptured.
I felt 100% fine that day, so faking sickness actually saved my life.