Cell, Frieza and others in “Unfinished Business”

Ha! Poor Frieza. You were once considered the fiercest fighter in the universe, and now you're just a simple...well, nothing but a slouch.

Uh! How dare you call me a slouch, you idiot! Wait, Cell! Look above you. (Goku is above Cell)

You know Cell, I was always taught that if you spent as much time training as you do criticizing others, then your fighting truly suffers.