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1.
The result of letting your mac n' cheese noodles boil too long on the burner, making them squishy.
"Aw man, I let the noodles go too long, now I have squishy mac!"

cheese
food
mac n' cheese
by Janet Reno Jr. March 16, 2010
 
2.
ANAL SEX WITH A CHEESE COVERED BUTT
I GOT DRUNK WITH MY GIRL AND GAVE HER A SQUISHY MAC WITH VELVEETA!
by its the cheesiest! August 06, 2008