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1.
When a person that is getting made fun of, has nothing but untrue, off the wall and outright ridiculous comebacks, which are completely unfunny as well as make no sense.
"That made no sense at all, you totally pulled a mccaffrey on that one."
by Donnie_ETAC August 06, 2007
 
2.
When a woman has a terrible case of diarrhea during or immediately following anal sex to both partner's sexual arousal.
I want you to give me a McCaffrey! Do it on my face!
by Glider Rider June 21, 2007
 
3.
An individual who panics about absolutly everything. A Mccaffrey will often get easily stressed out about simple tasks and will get mad when a telephone rings. It is unwise to try and give this individual information because they will ask an infinite amount of questions of which you do not have the answer to, but you told them everything you already know. Often has the same qualities as a small dog; alot of energy, moves fast when walking from a desk to a door, easily startled, and gets mad very easily.
"John there is no reason to get upset about the meeting, dont be a Mccaffrey."
by Spc Vancel April 18, 2007
 
4.
When a person receives a Blow Job inside or around a trash/garbage dumpster with whipped cream, by an inexperienced female.
"Did you get a mccaffrey from your new girfriend?"
by Donnie_ETAC August 06, 2007
 
5.
When a grown man has to run away and cry for help to a bigger and/or tougher man to come to his aid, to help him with his problems with his bullies/friends. Once the bigger/tougher man is done scolding the bullies, the said, mccaffrey will then come strutting back to the room acting as if nothing had happened.
"Oh look he is crying, he is probably going to pull a Mccaffrey now..."
by Donnie_ETAC August 06, 2007