From "Teenage Mutant Ninja Turtles: Shredded & Splintered (#1.5)"
[Shredder points a mutation reversal ray at the Turtles
Whuh-oh! It's that retro-muto-thingamabob!
He's gonna use it to turn us back into ordinary turtles!
Well, gang, looks like it's back to the ol' pet shop for us!
Far from it. Tonight, I dine on turtle soup!