1) A person who is moderately to morbidly obese from eating mass quantities of McDonalds food. Usually an American.
2) My middle school religion teacher, Ms. Miles
(Please don't give a thumbs down because of this definition. The one above is the real one.)
Look at that blob waddling down the street. That lady, Ms. Miles, must be a Mcfatty.
Look at Ms. Miles, my middle school religion teacher, stuff her face with that Big Mac. She is a Mcfatty.
Since look at all those tools, including Ms. Miles, standing in line in Mcdonalds. They are all Mcfatties.
The Mcfatty devoured 3 Big Macs and a large fry in one sitting. Her name is Ms. Miles.
When the Mcfatty, Ms. Miles, walked down the hall, I yelled "Earthquake" because she was so morbidly obese the building shook as she walked.
I yelled "Look out!" as the Mcfatty, named Ms. Miles, slowing jiggled towards Will. He would have been trampled and crushed to a gruesome death if I didn't admonish him of the corpulent whale approaching.
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