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 yourself 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