mcdonalds fever Share definition Flag You can stop eating McDonalds. Average life span: less than 50. Friend: What did you have for lunch? Tim: A Big Mac.Friend: You have got to have McDonalds Fever! mcdonalds fever by nicosoter August 17, 2015 0 0 Get merch Get the mcdonalds fever mug. Buy Now — $32.95 See more merch