From spitting out his gum shield to spitting straight bars, Anthony Joshua seems to be enjoying life back with his heavyweight belts.The current WBA, IBF, WBO and IBO heavyweight champion has been active on Twitter to share a lot of the fun experiences he appears to be having since his victory over Andy Ruiz Jr back in December.From playing FIFA with Liverpool’s Trent Alexander-Arnold, to motocross biking, the British champ looks to be doing it all. Even rapping.In his latest tweet, Joshua clipped footage of him performing a section of ’21 Seconds’ on stage with So Solid Crew.An unsuspecting crowd at Garage Nation were given a treat when the two-time heavyweight champion got hold of the mic to deliver a word-perfect verse.

The footage posted shows Joshua linking up with So Solid Crew’s most notable member Lisa Maffia to absolutely nail part of the song in front of a hyped crowd.

The viral clip was well received by the majority of AJ’s fans, who are now adamant that the tune should be his next entrance song.

One said: "This has to be Anthony Joshua's walkout tune for his next fight."

Another added: “Is there anything the two-time can’t do?”

Of course, this isn’t the first time in recent months that a popular British boxer has taken to the mic.

Tyson Fury collaborated with Robbie Williams in December to call Santa a big dosser in their Christmas tune ‘Bad Sharon’.

One supporter – after seeing Joshua’s performance – wants Fury’s next collab to be with his British heavyweight rival.

He commented: “Imagine in a years’ time we get an AJ/Fury collaboration.”

Think it’s safe to say that a boxing fight between the two would be a little more entertaining than a mixtape.

But who knows, perhaps Joshua will feature 21 Seconds in his next walkout song which could come against Bulgarian brute Kubrat Pulev, who is the mandatory challenger for his IBF belt.