I'm really suprised that no one dumped a bike in your class. The first thing they asked when I got to mine was if anyone had never driven a car with a manual transmission. About half the class raised their hands. Then they asked if there was anyone there who couldn't ride a bicycle. About 5 hands stayed up. At that point I knew I was in for some entertainment.
After about 1 1/2 hours of starts and stops, almost everyone got the hang of the clutch, but there was still one guy who just couldn't grasp the concept. The only way he could get under power was to rev her up, dump the clutch, and try to recover from the whiplash. Instead of holding up the whole class even longer, the instructors must have thought he would figure it out as we progressed through the course, so we headed out to the cones. Aside from nearly jerking his helmet off every time he started, all was going well for this fellow. Until the 90 degree turns, that is. Obviously the phrase "feather the clutch" had zero meaning to our boy wonder who was conveniently placed directly in front of me for this exercise. When he got to the turn, the clutch came all the way in and the throttle stayed where it was. Believe it or not, but a CB250 can make quite a racket at redline. It can also perform a pretty nice wheelie when you dump the clutch at that throttle setting. I guess our intrepid rider figured he'd had enough at this point and literally stepped off the bike. The Honda, on the other hand, was perfectly happy to troll along upright until it hit a car at the other end of the parking lot.
All of that was funny enough that I nearly dumped my ride from laughing so hard, but the kicker was yet to come. As the instructors were asking him to go home and practice on a manual transmission car before coming back he almost starts crying and says "but I just bought a GSX-R600 and my insurance company won't cover me until I pass this class." I guess sometimes insurance companies are smarter than I give them credit for.