Top Definition
A Day spent watching films featuring Jared Leto.
A Jarathon is only a Jarathon is there are Five or More Jared Leto Films Being Watched. Any less than Five Is called a Letofest.
"hey...fancy a Jarathon?"
"HELLL yes! Do we have enough films?"
"ummmm, no...we'll have to have a letofest instead."
by kayeee April 08, 2008
4 Words related to Jarathon

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