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Is a phrase to describe the vile stench of a specific odour which comes from expired processed foods, such as old potato chips. This phrase could also be used to describe a mushy and slightly moist substance. Specifically if a strand of hair is present within the mushy and moist substance.
"Hey Chris! have a whiff of these chips I bought from the vending machine!"
"WTF! That smells like Your Grandmothers Maggot Cheese"
"talk about gross!"

*Eating Lunch
"Eww! I found a hair in my food!"
"Wow! talk about Your Grandmothers Maggot Cheese"
by Meistro69 March 06, 2014
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