A catalogue of calamity methinks..!!
 Here's mine...
 Having bought my first Ducati (an early 900ss) I rode it the 30mls home without a prob.  I thought it was brill - so much 'grunt' compared to the Honda 400 I'd given in p/x.  Anyway, turning into my garage block at a decent speed, I was caught out by the limited steering, and crashed it straight into the wall opposite!  Luckily, I was trapped between it and the wall, and my torso took most of the impact.  I was so winded I couldn't move at all, and the neighbours were quick to gather round.  It took three of them to pull me free.  Embarrassing?  I've never lived it down!!