It's not exactly the most conventional reaction after scoring a goal.
But footballer Cristiano Ronaldo went a little gaga on the pitch after hitting the back of the net - by sucking his thumb as his young son watched on.
The Real Madrid star saluted his pride and joy with the gesture during his team's match against AJ Auxerre.
Six-month-old Cristiano Ronaldo Junior was being held by Jose Andrade, the boyfriend of Ronaldo's mother Dolores Aveiro.
And it appeared the Portuguese sportsman's good luck charm paid off, as his team went on to defeat AJ Auxerre 4-0 during the Champions League game.
Ronaldo, who dates Russian model Irina Shayk, announced that he had become a father on Facebook and Twitter this summer.
He shocked fans when he revealed he had become a father to Cristiano Ronaldo Jnr on June 17 to an un-named American mother.
He said he was in 'full custody' of the baby, which is being cared for by his mother Dolores, 55, and sisters Katia, 33, and Elma, 35.