The 28-year-old had had just a few touches of the ball after coming off the bench when he lashed home a fierce shot past Illan Meslier at the Frenchman's near post. Jadon Sancho had laid off the ball well for Fred, who replaced the impressive Paul Pogba after 67 minutes and scored after 70.
Just minutes after full-time as United celebrated in the dressing room, Fred tweeted simply: "ud83dudd25."
He followed it up soon after, tweeting: "All glory to God. The feeling of victory today is indescribable!"
All glory to God.