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Always be wary of the old guy with mad skill.

Swiss star Xherdan Shaqiri played an awesome trick on some youthful footballers, and all it took was a fake beard and some grandpa clothes.

He showed up at the SC Kriens training ground and trained with some of the club's top youth players, and he turned heads with an array of silky moves typically not associated with a man of Shaqiri's disguised appearance.

When he was done showing off his old-guy game, he tore his beard off to reveal that he's not, in fact, an old guy and got the hero's welcome that one would suspect.

[Blick, h/t Talking Baws]