Definitions by Grahamfw

Critical ass 

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?

Critical ass by Grahamfw December 7, 2011