The ‘aroused’ cyclist was pulled aside and put his jeans back on before being spoken to by officers.
Organisers of the World Naked Bike Ride (WNBR) said the rider was removed before the ride started in Canterbury, Kent, on Saturday.
The naked rides, which take place in cities and towns around the world, are organised to highlight the dangers cyclists face from cars.
Participants are permitted to cycle naked but must adhere to strict rules.
One witness said: “Everyone was taking their clothes off to get ready for the ride. I heard gasps and I turned around – it was a horrible sight.
“It’s fair to say he was overexcited and got aroused. It looked like he was enjoying the event a bit too much.
“One of the organisers went over to him and told him to put his trousers on while speaking on a walkie-talkie to police.
“The man looked sheepish when he was spoken to by the police.”
No boners?!?! Fuck that noise. Per the USNCAA, the governing body of naked cycling and archery, all riders must be sporting a minimum 35 degree semi at all times to participate in naked cycling. Rules are rules, fellas. The world of naked cycling does not need any cowboys with their Stalin-esque “no boner” policies, it simply grades against the spirit of the sport…which everyone knows is the purest form of the sport of cycling. You ever see Lance Armstrong competing in Naked Cycling? That’s because the entire world, and Sheryl Crow, knows it is chemically impossible for Lance to cross the finish line with a credibly taught victory flag flying. No doping. Pure unadulterated Integrity! That’s what naked cycling is about. And also gross bodies. Integrity and gross bodies! Boners aren’t just welcome, they’re mandatory.