Twenty schoolchildren, Mohamed Salah, one giant prank and the Liverpool FC video you simply cannot afford to miss.

For the latest edition of Kop Kids, in association with Joie Baby, we took a group of youngsters to Anfield on the premise that they were entering a commentary competition - the prize being the chance to meet the Egyptian King at a later date.

The pupils were selected as part of the club's Red Neighbours programme and, two-by-two, picked up their microphones to describe the Reds' 4-0 victory over Arsenal earlier this season.

And then they were given a surprise they could scarcely believe.

Watching and listening from backstage, Salah waited for an opportune moment before bursting through a paper screen image of himself without any prior warning.

The reactions of the astonished participants were something to behold - and you can watch them all in the six-minute YouTube clip embedded below.