You've heard of photobombing...but new Liverpool defender Mamadou Sakho decided to take things to the next level by video-bombing fellow centre-back Martin Skrtel during an interview with the club's official website!
The cheeky French international repeatedly popped up behind the Slovakian as Skrtel was trying to answer questions about the team's season, pulling faces and making the staff members laugh who were asking the questions.
Sakho has developed something of a reputation for being a powerful, aggressive, no-holds-barred defender during Premier League matches so far, quickly becoming a fan favourite with many thanks to his good timing and strong challenges.
He certainly showed his lighter side in training, however, at odds with the mean demeanour he often portrays once the whistle blows.
For his part, Skrtel has often been seen as a similar kind of defender, though in truth he's not quite as tough as he looks!
The duo, in addition to Kolo Toure, have formed a three-man defensive line in recent matches for Liverpool, as manager Brendan Rodgers has switched to a base 3-5-2 formation, with the three centre-backs keeping vice-captain Daniel Agger out of the side.
Competition for places is fierce in defence this season, with Andre Wisdom, Martin Kelly and Tiago Ilori all also looking for game time, while Uruguayan defender Sebastian Coates is out injured for the entire year with a knee ligament injury.