When yelling at Gina on the beach, Roger (Max Jets) is saying: "bring us all the menus. I don't want anyone else ordering." The audio is being played backwards.
Roger defies death by being flame resistant, has no bones, and also be able to reassemble himself as shown in other shows.
Walkabout Steakhouse is a parody of Outback Steakhouse, an American chain of Australian-themed casual dining restaurants. (Walkabout is a ritual performed in Australia by indigenous people)
The full name of Roger's persona is Maximas Horatio Seamus Bennieandthe Jets, the latter part being a nod to the Elton John song "Bennie and the Jets".