Football officials are meant to be impartial but an assistant referee from Paraguay couldn't resist showing off what a big Lionel Messi fan he was on Tuesday night.
Nicolas Yegros was working the line for Argentina's World Cup qualifier against Chile and at half-time he approached the Barcelona star and asked him to pose for a photograph with him.
A rather bemused Messi granted Yegros his request as the Paraguayan smiled giddily beside his football idol.
But why would Yegros risk the wrath of FIFA with such a brazenly unprofessional act?
Well according to the South American media it was his last official match in charge and therefore he 'did not care about any fines or punishment from FIFA.'
He also got to watch Messi score as he helped Argentina to a 2-1 away win which gave the visitors a three-point lead in the standings of South American World Cup qualifying campaign
Messi and Gonzalo Higuain struck within minutes of each other half an hour into the match, with Chile pulling one back through substitute Felipe Gutierrez in added time at the end of the game.
Argentina have 20 points from nine matches, three more than Ecuador, who drew 1-1 away at Venezuela, and four ahead of Colombia, who have a game in hand.