The Protomen's song "Vengeance" might as well be made up of Mega Man one-liners, since the track is about Megaman slaughtering Robot Masters. An actual quote from the song is: "Send me the best you've got / Send me your strongest machines / The fight my brother fought / Here, now, will end with me". Also, after he actually trashes the first wave of robots he's not nearly satisfied so he says: "All you wounded!—those of you who can— / Pick yourselves off the ground / Hurry back / Tell your leader you'll need more men" as he prepares for the second wave.
Limp Bizkit gets one in their song 'Break Stuff', that leaves the ass-kicking to your imagination:
"I pack a chainsaw. I'll skin your ass raw. And if my day keeps going this way, I just might BREAK YOUR FUCKING FACE TONIGHT!"
An example that is both this and a Post Ass-Kicking One Liner (after one ass-kicking, but before the next) from Tenacious D's Tribute