I remember watching Alan Groves run down the wing with the ball, being marked by an opposition player.
The player must have stood on Grovesie's heel, loosening his boot.
Groves, whilst still running at pace with the ball, flicked that foot up, resulting his boot flying over his head behind him.
The player looked behind him, thinking it was the ball, breaking his stride - enabling Groves to get away from him with the ball.
The man was a genius.