Teenage Mutant Ninja Turtles, Season 3

[Splinter attacks the turtles and throws them around the lair]

Splinter:
You are losing your fighting edge, my turtles. Were it Shredder who attacked you, he would not be so lenient.

Raphael:
Aw, come on, Master Splinter, we already sent chrome-dome and Krang to the Earth's core.

Michelangelo:
Yeah, right. Those dudes are totally dusted.

Splinter:
Without positive proof, it would be unwise to assume that Shredder and Krang have been vanquished. Beyond that, may I remind you that you are still crime fighters, and that the streets of this city are still filled with crime. I suggest doing each ninja exercise twice. You obviously need the practice.

Leonardo:
Well, you heard Master Splinter. Let's do it!