Someone who really likes the musical wordRent/word. Usually found "rushing" (waiting outside for hours) to get $20 front row tickets. Many have seen the show hundreds, even thousands, of times.
"Those Rentheads in the front row can get pretty annoying with all their whooping and hollering between songs."

"I'm a total Renthead! I know every word to RENT!"
by Kristen October 20, 2003
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Fans and followers of the musical RENT by Jonathan Larson. Someone who loves the music of RENT. A fan who camped out side of the theatre for 20 dollar seat when RENT first opened in New York.
Kay: *sings* "525,600 minutes, 525,600 seasons of love..."
Mark: "You are such a renthead!"

Kay: "I camped outside of New York Theatre Workshop to see RENT for $20."
MArk: "You are a renthead!"
by Mimi Brown December 22, 2011
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A disciple of the late, great, Jonathan Larson. About half of these Rentheads aren't really Rentheads, but they saw the movie and apparently that's enough. Someone who is completely in love with the show, almost as much as I am. We know the beginning to I'll Cover You isn't "Cold", "Come on", it's "Alone at last..." "...Darling, we're everything", and Take Me or Leave Me belongs in Joanne's loft, not the Greenwich Village Country Club.
True Rentheads are one in 525600.
by Vampire Welfare Queen December 6, 2006
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Someone who is obsessed with RENT. They know every word to every song, have seen BOTH the movie and the play, and love it to death. They know every little detail, from the fact that 'Take Me Or Leave Me' was added two rehearsals before show time, to the precise differences between the Movie and Stage show.
Forrest is such a RENThead, He knows all the words, facts, and little everythings about RENT.

RENTheads, gosh, get a life, RENT isn't something to obsess about. Just because YOU know everything about it, doesn't mean we do.
by Forrest/Remus November 3, 2007
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A disciple of the late, great, Jonathan Larson. About half of these Rentheads aren't really Rentheads, but they saw the movie and apparently that's enough. Someone who is completely in love with the show, almost as much as I am. We know the beginning to I'll Cover You isn't "Cold", "Come on", it's "Alone at last..." "...Darling, we're everything", and Take Me or Leave Me belongs in Joanne's loft, not the Greenwich Village Country Club.
True Rentheads are one in 525600.
by Vampire Welfare Queen December 6, 2006
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