The Brazilian forward had no idea he was being filmed as his teammate wiped a cream cake over his face and made a run for it to the other end of the dressing room.
Neymar may have received many pleasant birthday messages as he turned 24 on Friday but Barcelona teammate Rafinha chose to send his well wishes with a delightful prank.
The 22-year-old posted a message on Instagram to congratulate the Brazilian but it came with a sting in the shape of a cheeky video.
Neymar had no idea he was being filmed as he sat in the dressing room and was approached by Rafinha, who was hiding a slice of birthday cake behind his back.