Rickton combines said mice with his Ultimate Weapon to create the Greater Ultimate Weapon. He then discards the Lesser Ultimate Weapon in a destroyfully way.
As Rickton's Greater Ultimate Weapon is composed partially of mice, it quickly disintegrates, and Rickton is left to die in the acid pit. But Mackilroy, seeing that Rickton is without a root beer, kills him so he can be regenerated, and gives the new Rickton a root beer.
DE remembers the weapon room he established in this bar. DE runs in to the room "full of every weapon imagonal" and pulls the Better then the Greater Ultimate Weapon. DE uses it on Rickton.
emainiac turns the turkey into a demon mutant turkey that turns on him because of his refusal to change another turkey into a demon mutant female turkey.