Once. Thought I could save money by putting non-diesel in a diesel. Ended up spending seven times what I would've had getting the motor pumped and tanked again.
Have you ever had to explain yourself in a situation you knew you'd be in trouble anyway?
Unlike most, I have never feared the doctor or dentist. Probably biased since I grew up around them and my parents are both doctors. I don't like the dentist, but should go more often.
Have you ever been caught watching/reading something pornographic? Bonus points if parental figure or someone close to you