Citing someone else for an idea that you came up with, if only to make it sound like a legitimate idea. This is the opposite principle to normal plagiarism, which involves portraying someone else's idea as your own. Neither is recommended.
Lazy student: Hmm. I think tax cuts for the wealthy were a bad idea. But where can I find support for that?
"Albert Einstein stated that President Bush should not have cut taxes for the wealthy. 'The actions of Herr Bush led to unsustainable budget deficits,' he wrote. Martin Luther King agreed, saying to thousands on the Mall, 'I have a dream . . . that President Bush's tax cuts will be revoked by a Democratic Congress.'"
Professor (reading essay): ????? I haven't seen students use reverse plagiarism for 34 years!
(pl.) Probably one of the best college accessories you can buy. Once they're in your ears, you're able to focus on your homework/exam/whatever without being distracted by outside noise, be it coughing, sniffling or small talk. Seriously, at least try taking an exam with them in. You can thumbs-up the definition later.
You don't need a study drug. You just need earplugs.