This is a point where you are partaking in anal sex and it is a definite problem because the motion of thrusts has produced a plunging effect and now shit is about to spill out in an amount that can accumulate a small or lage pile. When it just already is spilling a little that is also critical ass as this is most commonly how it is reached. I am implying that it doesn't have to be a point where the person receiving the thrusts feels it about to come out or the person thrusting feels an approaching barrier that is progressively preventing more room for penetration or it just begins to feel really mooshy. Those are also critical ass. This is the point where the person receiving the phallus has to inch one self over to a safe receptacle with out letting open the flood gates. It can become a spout to where the person is really taking a full-on dump and not just a spill.
Matt:"Oh no... do you smell that? Oh there's too much grease on the penis now."
Kate:"Oh it's fine...pfffrrrohht. Actually... I think we have reached critical ass."
Kate:"Oh it's fine...pfffrrrohht. Actually... I think we have reached critical ass."
by Eagle747 August 27, 2009
Get the Critical Ass mug.The ability to to determine the man who wants to kill you, and that man that will kill you, based on the actions he takes, and the size of his magnum.
by Bob Thomas August 21, 2003
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Keeping the raft upright in this rapid the critical biscuit here. It would also be nice if we can stay in the boat too.
by refuge October 17, 2008
Get the critical biscuit mug."CRITICAL on racsist preppy teacher = CRITICAL!"
"YEAH! What a Critical by the Rock Crusher!"
"CB! CB! CB! Only one of 423432 Finishers i gave to Dusty! That Cactus Breaker sure is devastating!"
"YEAH! What a Critical by the Rock Crusher!"
"CB! CB! CB! Only one of 423432 Finishers i gave to Dusty! That Cactus Breaker sure is devastating!"
by J2k3 March 24, 2003
Get the CRITICAL! mug.by benman April 26, 2004
Get the critical mug.What you yell at the climax of phone sex, if you are a fat sweaty nerd who lives with his parents and has no job at 20.
" uh uh uh.... critical mass... did i tell you my name was paul? "
*thankyou for calling kids helpline*
*thankyou for calling kids helpline*
by grouter55 July 13, 2003
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