For many boxing fans, Anthony Joshua's win over Wladimir Klitschko remains a highlight of 2017 which will live long in the memory.After 11 rounds of brutal heavyweight boxing, Joshua flashed a brief grin at the raucous crowd, before calmly stepping back towards his chair, as if the momentous nature of his victory over Klitschko had yet to sink in.He was, in that moment, reflective and serene. The crowd’s behaviour was a far cry from the demeanour of the victor, they buzzed with as much activity as a throng of ants.Their noise and motion swelling to a crescendo. Celebrating a national hero, five years in the making, at last garnering the global success that had long been craved.His team jumped around him. In images reminiscent of bygone champions, they smothered him with hugs and praise, in a scene that would go on to define the boxing landscape of 2017.Amidst the din and chaos, one exchange that was missed by cameras and audiences initially, was that which occurred between boxing luminaries Eddie Hearn and Tony Bellew.Their unusual method of celebration remained unknown, until now...

Bellew may be better known for having hands of granite, but Hearn will surely attest that his head is made of stern stuff too.

As the video above shows, the unfortunate clash of heads between the pair seemed to leave the Essex native coming off much worse.

Hearn grimaces after the blow to the cheek, however the elation of the moment seems enough to get him through the obvious pain he's in.

It is just as well that headbutting is not allowed in the ring, otherwise we would’ve seen far more pained expressions like Hearn’s.

The two did celebrate with a more conventional hug and fist pump once the initial shock wore off.

Having been made aware of the new footage, Hearn actually tweeted:

Eddie's face in the clip tells a very different story though!

Perhaps this was what inspired the gesture made between Johnny Bairstow and Cameron Bancroft at the start of the Ashes series this winter.

The look on Eddie’s face though suggests this isn’t something that will catch on, neither as a form of celebration, or type of greeting.