You're not an idiot. You're human.
Now, if you didn't learn from this oversight and repeated your mistake you'd technically be stupid.
Stupid = knowing better, but still repeating the same mistake.
Dumb = not knowing any better and not able to learn the correct method.
Idiot = being a jerk, like peeling your mustang out of cars and coffee right into a tree.
Read more auotmotive mishaps here:
http://www.cruzetalk.com/forum/17-off-topic-discussion/206458-stupid-car-tricks.html
