Conor McGregor and Dustin Poirier have shared the octagon on three separate occasions, with the latter winning the last two of their meetings. While it was assumed that their rivalry had concluded, that does not appear to be the case. Following an announcement that Poirier was hospitalized with a staph infection, his rival wasted no time in taking a shot at him.The Diamond@DustinPoirierGoing on day 2 in the hospital. Shits getting serious7568140Going on day 2 in the hospital. Shits getting seriousIn a quote tweet posted to his Twitter account, the former double champ stated:"Heal up soon scruffy knickers"Poirier responded by accusing McGregor of using steroids while challenging him to another fight, stating:"You done filming Roid House and ready to get slapped around again!?"McGregor fired back with a scathing response, alleging that he would put Poirier in a coffin. He also did not miss the opportunity to promote his upcoming film, the remake of the 1989 classic film Road House:"Ye I’m in Amsterdam jacked like [Jean-Claude] van damn. You weren’t just hurt pal. You were scared hurt don’t forget it. I’m coming back to put you in a box. Full of it. I’m sending you off this earth. Permanent. Stay waiting for the road house as well pal you and the missus will love it."It is unclear if the pair will meet for a tetralogy fight or are simply bantering online as frenemies. While McGregor defeated Poirier via TKO at UFC 178 in 2014, the No.2-ranked lightweight got his revenge in 2021, as he picked up TKO victories at UFC 257 and UFC 264, handing McGregor the first two knockout losses of his mixed martial arts career. The former double champ is yet to return to the octagon after breaking his leg in their most recent meeting.Check out Conor McGregor and Dustin Poirier's Twitter exchange below:Conor McGregor@TheNotoriousMMAHeal up soon scruffy knickers twitter.com/bokamotoespn/s…Brett Okamoto@bokamotoESPNSome context on Dustin Poirier’s (@DustinPoirier) IG posts about being hospitalized … told me it’s staph, but he’s not responding to antibiotics over the last 24 hours. Undergoing further blood work now, hopefully get some answers today.6193216Some context on Dustin Poirier’s (@DustinPoirier) IG posts about being hospitalized … told me it’s staph, but he’s not responding to antibiotics over the last 24 hours. Undergoing further blood work now, hopefully get some answers today.Heal up soon scruffy knickers twitter.com/bokamotoespn/s…The Diamond@DustinPoirier@TheNotoriousMMA You done filming Roid House and ready to get slapped around again!?6067348@TheNotoriousMMA You done filming Roid House and ready to get slapped around again!?Conor McGregor@TheNotoriousMMA@DustinPoirier Ye I’m in Amsterdam jacked like van damn. You weren’t just hurt pal. You were scared hurt don’t forget it. I’m coming back to put you in a box. Full of it. I’m sending you off this earth. Permanent. Stay waiting for the road house as well pal you and the missus will love it4691289@DustinPoirier Ye I’m in Amsterdam jacked like van damn. You weren’t just hurt pal. You were scared hurt don’t forget it. I’m coming back to put you in a box. Full of it. I’m sending you off this earth. Permanent. Stay waiting for the road house as well pal you and the missus will love itJoe Rogan is the latest to accuse Conor McGregor of steroid usageConor McGregor has faced plenty of steroid allegations as he prepares for his UFC return. The No.14-ranked lightweight is the only fighter on the UFC roster that has not been tested by USADA in 2022, giving plenty of fuel to the rumors.Joe Rogan became the latest to question whether or not McGregor is clean.Aaron Bronsteter@aaronbronsteterAfter cross-referencing the entire active UFC roster with USADA's athlete test history database, I found that Conor McGregor was the lone active fighter, (aside from some athletes who signed after Aug. 1) to not be tested by USADA.tsn.ca/ufc-star-conor…1697206After cross-referencing the entire active UFC roster with USADA's athlete test history database, I found that Conor McGregor was the lone active fighter, (aside from some athletes who signed after Aug. 1) to not be tested by USADA.tsn.ca/ufc-star-conor…Speaking on his podcast, The Joe Rogan Experience, the UFC commentator stated:"He's taking his shirt off and posing constantly and he looks like his piss would melt that USADA cup. Like it would just like burn a hole right to the bottom of that USADA cup."McGregor, who has been inactive for nearly eighteen months, will be unable to make his return to the UFC until he spends six months in the USADA testing pool and submits two clean urine samples. He recently shared that he is likely to begin the process in February, meaning that the soonest he will be able to return to the octagon will be in August 2023.Conor McGregor@TheNotoriousMMAI am clear for testing in February. I will complete my two tests per USADA and we are booking a fight.581593257I am clear for testing in February. I will complete my two tests per USADA and we are booking a fight.Watch Joe Rogan discuss Conor McGregor's potential steroid use below (starting at the 3:00 mark):