Alex Pereira and Hasbulla were spotted having a bit of fun backstage at the UFC 311 weigh-ins. The two took part in a comedic face-off that culminated in the diminutive social media influencer headbutting the light heavyweight champion, drawing fan attention.A clip of the pair's interaction has been making the rounds on X and Pereira can be seen exaggerating the impact of the headbutt, falling onto his back before smiling the entire thing off. Thereafter, the pair shook hands in what has become a typical interaction between Hasbulla and other fighters.Check out Alex Pereira selling Hasbulla's headbutt:As expected, fans flocked to the tweet in droves to share their thoughts on the pair's interaction. Pereira is one of the most stoic fighters on the UFC roster, having developed a fearsome reputation due to his no-nonsense disposition and nuclear punching power.However, the joke with Hasbulla is that he is a formidable individual, prompting some fans to issue the following comments:"Alex is in big trouble"Meanwhile, another fan joked that a jab from 'Poatan' would be enough to shut Hasbulla's lights out."A jab might kill him"Others poked fun at the headbutt itself:"His head would probably explode"Some even aimed hyperbolic jokes at the interaction."It would obliterate 99% of people"A collage of fan reactions can be seen below:Fan reaction to Pereira and Hasbulla collaboratingIt comes as little surprise that both Pereira and Hasbulla were present for the UFC 311 weigh-ins. Two of the Brazilian's past opponents in Jamahal Hill and Jiří Procházka will compete at UFC 311, and 'Poatan' has already expressed a willingness to face Hill in a rematch.Meanwhile, Hasbulla is likely in attendance to support the Dagestani contingent of Islam Makhachev and Umar Nurmagomedov, who headline and co-headline the card.Alex Pereira and Hasbulla have joked together beforeThis isn't the first instance of Alex Pereira and Hasbulla being spotted together. Months ago, the pair took part in a public appearance, posing for pictures before Hasbulla did as he always does when posing with fighters, and lightly punched Pereira in the face.Check out another Alex Pereira and Hasbulla moment:The Brazilian reacted by faking the impact of the strike, and the two smiled it off before posing for yet another picture. It is something of a departure from Pereira's image as a cold-blooded knockout artist.