Top Definition
A contraction of the words 'movie' and 'marathon'. Watching several films in a row, usually in the same series/franchise.
- So are you going to Harry's moviethon tomorrow?
- Nah, I'm not a big fan of the Jurassic Park-trilogy.
- You can still come over you know.
- Nah, I don't like Harry either.
by Ghoulem May 31, 2009

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