Would you believe I actually "blew a motor" with one of those card set-ups, and blew a tire too? (Only me.) I was a kid, and I had an orange stingray (I hope my parents saved it). I wanted that motocycle sound, so I got a playing card and a clothespin that I smuggled away from my grandmother's house. She used the really long handled kind. I was riding around, buzzing like a nest of hornets, when it happened!
I can only guess that the spring on the clothespin might have been wimpy, but somehow (about the time it stopped buzzing) it must have swivelled around far enough that the one wood handle stabbed my tire and gave me a blow-out. Technically it dislodged the tire enough to stab the inner-tube. I knew I had it stuck on there close to the rim, but I never would have dreamed it would be able to do that. Live and learn, I guess. I had a new tube on in no time and rode around for a few years after that rather quietly.
