1 definition by Grahamfw

Top Definition
The point at which critical mass of the ass is reached, prompting one to immediately find a bathroom and empty contents of said ass; esp. problematic for the work dumper who would rather get paid to defecate but instead has to take care of business before leaving the house.
Graham: I reached critical ass this morning and was 20 mins late to work.

John: Critical what?
by Grahamfw December 07, 2011

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