Alexander Purser, 23, was driving through Acton, near Sudbury, on 7 June last year when he "spotted a community speed watch group in a lay-by on the side of the road".
He went home, stripped off, jumped on his bike wearing nothing more than his specs and a pair of trainers, and headed back to entertain the speed trap vigilantes. He later explained he "wanted to see if he could reach 30 miles and hour on his bike naked while travelling through the speed trap".
Purser clarified to Bury St Edmunds Magistrates' Court earlier this week: "I thought it would be fun, both for me and the people manning the speed watch."
Now THAT's what I call interval training!