For those who don't get the joke.
Back in 2011, Gregory Bauge beat Jason Kenny in sprints at the World Championships.
In January 2012 it was announced that Baugé had received a backdated 12 month suspension for missing doping tests. This meant that all his results for 2011 were nullified. This elevated Britain's Jason Kenny to gold medal position in the Sprint event at the 2011 World Championships, as well as giving the German Team Sprint team the gold medal in the same meet.
Wikipedia
So, at a the February 2012 World Cup, the UCI presented Kenny the Jersey for the previous year's World Championship that he'd now won by a technicality. So, apparently, during the ceremony someone goofed and gave British Cycling President Brian Cookson a
Junior jersey (instead of an Elite jersey) to offer Kenny. You can see "Junior" on the shoulder.
