When one father asked his sons if they’d help him try out his new slow-motion camera, he probably wasn’t expecting this. <br /> <br />Liam Terry asked his son to kick a football so that he could try out the slo-mo feature on his Sony Z3 mobile phone. <br /> <br />But the moment the ball leaves his foot, it’s abundantly obvious what’s about to happen as it heads directly towards the other boy’s head – and hits him smack-bang in the face. <br /> <br />And though the youngster bursts into tears, it appears Mr Terry considers the accident a successful experiment. <br /> <br />‘So happy I caught this on camera!’ he writes.