Well, where do we start?
1) When i sold my 951 because it was having serious boost issues and (back then) i though that the motor was going to be toast. So my dad took it off my hands (i didn't charge him) and it turned out to be simple fixes.
2) While i owned the 951 i got the bright idea to make this string of oscillating LED's in electronics class to give it the night rider look under the stereo head.
3) I got into 3 consecutive stoplight races where i got up to 100mph and then stopped, then took off again. When i finally did stop my brakes were smoking considerably.
4) When i bought my 944 which had a slightly cracked block but i didn't know.
5) When my father and i put together the 944 engine the first time with the wrong oil pressure spring installed and it blew an oil filter apart.
6) In the course of 3 months i went through 3 pairs of front shocks on my old 88' nissan pickup, but of course i never went off road

.
7) When i was driving behind a state cop in jersey on the 280 and the cop took and off ramp. So once he was out of view i stomped on it and took off. What i didn't realize was that the off ramp was attached to the corresponding on ramp and i got nailed doing 100mph in a 55 section (the highway was empty).
8) When i bought the 911 thinking that the hot start problem and the shifting issues were probably small fixes.
9) One time i was doing some welding not realizing that there were two gas containers under what i was welding with gas in them.
There's probably more but i can't think of anymore. I feel like a walking tim allen right now.