F1 fans are convinced Eminem gave a non-verbal shoutout to Cristiano Ronaldo before the Abu Dhabi Grand Prix.
The rap superstar put personal tragedy aside to perform at the pre-race concert at Etihad Park on Saturday.
Just days after the death of his mother, Debbie Nelson, the American performed in front of a crowd of 40,000 spectators.
Eminem - real name Marshall Mathers - belted out several of his hits to the adoring crowd.
And he signed off his show by shouting "Abu Dhabi" as he spun in a circle and jumped in the air.
And watchers of the show are convinced the 52-year-old was doing his best impression of Ronaldo's famous "siu" celebration.
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One wrote on Instagram: "Eminem knows who is the GOAT."
Another said: "How amazing man CR7 all over the world."
And another said: "Funniest siuuu I have ever seen."
One remarked: "GOAT recognises GOAT."
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Another chimed in: "End of debate."
Several Eminem, however, were quick to point out the supposed "siu" has been a staple of the closing moments of rapper's shows for several years.
One said: "As a Ronaldo fan, Eminem has been doing this for so long. This ain't siuu."
Another said: "This wasn't the siu, let's be honest here."
And another said: "Eminem has been doing this in performances for a long time before Cristiano started doing it…. history lessons for y'all kids."
One remarked: "Ronaldo fans always make anything Eminem always does that on his tour."
Another chimed in: "Eminem has been doing this since 2010, Cristiano's first siu was in 2013."