Top Definition
Due to intense lack of funds, a mastercation is a "staycation" wherein the only planned activity for amusement is masturbation. Should only be attempted by the truly pathetic.
I signed up for Naughty America for three days for $1.95, so I think I'm going to take Monday off and have myself a little mastercation.
by RoboNasty July 20, 2009

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