Last weekend I decided to swap over from SS to fixed for the first time. All seemed well.I found the shorter cranks made spinning faster much easier and combined with leg breaking, descending on my 'girly' 66" much more controlable. I had just started to feel like I was getting the hang of it all,when an opportunity to outsprint a young upstart on his mtb presented itself on the way to work last Monday. I was unable to resist & rather pleasingly,I thought,left the said young man trailing in my wake...... ....until I hit the first speed bump and suddenly years of offroading kicked in and...... yep, as I appraoched the speed hump at speed,I stood up on the pedals to absorb the bump and coast over it. I hope I provided my adversary with a good chuckle as my pedals kicked me out - forcibly! - landing me on the toptube (ouch!) with my legs flailing comically and the pedals whirling around wildly. I just managed to regain control of the bike without falling off. I now have a lovely black and blue left calf as a reminder not to stop spinning...... ahem! oh well ! Life is for laughing - hope this makes other people laugh too !