The ongoing rivalry between Wolverine and Deadpool—or, to be precise, Hugh Jackman and Ryan Reynolds—reached a new level today. Jackman posted a video to his Twitter in which he's trying his best to record a birthday message for someone, only to be continually interrupted by Reynolds in his full Deadpool get-up, sarcastic persona and all. 

When you’re trying to record a heartfelt birthday message .... but are interrupted by the least greatest showman. @VancityReynolds

— Hugh Jackman (@RealHughJackman) April 27, 2018

As Jackman tries to get his message out, Reynolds starts singing “Tomorrow” from Annie while laying down in what looks like a hotel bed behind him. Reynolds then switches to the 2000 Baha Men classic “Who Let the Dogs Out."

The fun between the two actors stems all the way back to the X-Men Origins: Wolverine, in which Reynolds debuted as Deadpool. The first solo Deadpool movie had a particularly good joke at Wolverine’s expense when Deadpool attempted to cover up his scarred face by stapling a People magazine cover of Hugh Jackman to himself.

Jackman famously retired from playing the Wolverine character after Logan, so it’s very unlikely that we’ll see him in Deadpool 2 next month (even though Reynolds has expressed interest in a Deadpool x Wolverine movie before). Nevertheless, Jackman has been promoting the sequel with his buddy. The two even linked up to troll Disney’s purchase of 21st Century Fox, which will effectively bring Deadpool (and all the other X-Men characters) under Disney’s wing

Deadpool 2 is in theaters May 18.