To steal part of a song, usually the hook or chorus, and insert it into a crappy song so that the otherwise crappy song is tolerable. This "sampling" is usually blatantly obvious.
"Have you heard FloRida's new song 'Sugar'?"
"Ew, the one where he steals, I mean samples music from that crappy techno song 'I'm Blue'?
"Yeah, it came on the radio last night and I couldn't stay in my car, it was too horrible. I hate songs that sample music"