After scoring the first of his three goals against Spain, the 33-year-old did a peculiar celebration which left everyone speculating.

Portugal was unable to knick three points off of Spain despite taking the lead twice, but Cristiano Ronaldo stole the show with his excellent hat-trick. A first-half brace from the 33-year-old was followed by an amazing 88th-minute free-kick goal to earn a 3-3 draw.

While many were busy singing the five-time Ballon d'Or winner praises after his Man of the Match display, others were busy wondering about something peculiar that the Real Madrid man did. The Seleccao das Quinas captain sparked a debate after his first goal, which came courtesy of a penalty, due to his unusual celebration.

The goalscoring machine slotted past David De Gea a few minutes after kick-off to grab an early lead. Immediately after netting, Cristiano ran to the corner flag and stroked his chin in celebration, leaving many pondering the meaning behind his move.

The popular theory was that it was a reply to Lionel Messi, who has been pushing for the "Greatest of All Time" title in a recent ad with Adidas. Several people on Twitter have thus deduced that this was Ronaldo, another active "GOAT" challenger, staking his claim.

There was another speculation, though less popular, that this celebration was a dig at De Gea. The Spanish custodian stood in front of the ball and Cristiano, possibly in an attempt to get into the attacker's mind and intimidate him. That amounted to nothing, however, as the Portuguese superstar converted with ease.

Or maybe it was a message to Florentino Perez, as stated in the tweet below. The former Man United winger is reportedly unhappy with the Blancos president over unfulfilled promises over a new deal and a pay raise.

As of now, no one can really say what the true meaning behind Ronaldo's celebration was, other than the man himself. Fans can only speculate. Until the answer is revealed, if it is ever, supporters can anticipate more from the hat-trick hero ahead of their next ties against Morocco and Iran.