A song that becomes viral on the internet or on TV due to the fact that it's simply idiotic,stupid,or just plain strange. Some examples would be PBJT! Or the FreeCreditReport.com song.
Guy 1: Have you heard about the song Peanut Butter Jelly Time?

Guy 2: Yeah, it's a total idiosongracy.

Guy 3: Agreed.
by Mark3791 May 10, 2009
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