I once fooled my parents into thinking I was in a coma one morning where I REALLY didn't wanna go to school, I never could replicate it but I was the genuine article. They rushed me to the hospital through an ambulance and I spent about a week after I "woke up" there.
to this day my parents STILL don't believe I faked the whole thing, even though I fessed up cus I didn't wanna get an MRI injection.
I would never do it again, by the way, even if I could. The hospital was hell, and all the tests they ran on me weren't worth skipping school for.