JB and Billy reunited on Triple M's Rush Hour on Tuesday, 24 hours after Billy Brownless went down the slide during the Big Freeze to fight MND.
The event, which took the total raised for Fight MND to over $60 million, saw JB - alongside Darc - call all the sliders on Triple M Footy ahead of theDees/Pies clash.
One of which was Billy's effort, in which the only good showing was the backflip!
"That was the only good bit!" he laughed.
"Your costume was rubbish! No one knew what it was and then you commercialised your jocks!
"Look at beautiful Sarah Jones and the work she put into it! We had rappers, we had Dipper. The girls were superb, and yet Fat, YOU JUST WENT TO NO TROUBLE!"