Top Definition
When living with roommates this is a tax that all roommates share with another. It is when one roommate needs a favor or just calls it for shits and giggles. However, it can only be used once a month. When a roommate calls roommate tax it MUST be followed through with unless life threatening. The roommate being called roommate tax on can not call the same tax on that roommate. Not until next month.
I had a really long day at work today and don't want to make super, I call roommate tax on Mike to make supper!

I don't feel like doing my laundry... hey Mike, I call roommate tax for you to do my laundry.
by A-Malogna June 15, 2010

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