Last Sunday, FC Taxi Duisburg II and SV Rot-Weiss Mülheim were preparing to go head-to-head in the lower divisions of German football.

As officials usually do, referee Stefan Kahler, who was due to take charge of the clash, was going through his pre-match checks.

While Kahler was conducting the license checks, a Taxi Duisburg’s player’s son was reportedly running around the field of play before he approached the ref.

And he certainly did not expect what happened next.

According to the official’s report he could not take charge of the match after he was bitten by the child.

He wrote: "While I was checking the FC Taxi players’ ID, a small child was doing warm-up exercises alongside the players.

“He came closer and closer to me, then suddenly - to my complete surprise - gave me a sharp bite in my left testicle.

"I did not start the game, because of the pain I was in and the situation.

…

According to German outlet WAZ the medical condition of the referee is still unclear.