This is a racist term that has been quite popular on platforms like Reddit and Twitter, often times this term is associated with the n word but this term rather than to be offensive in an aggressive way, it is offensive in a depressing way. The textbook definition of this term is, "Person of dark skinned especially Nigerian race being falsely convicted of crimes." Its origin is not well known but its is believed to have just been a picture of a black man in jail.
Fogey/fogy /fougi/ sl. (early 18C+, orig. Scot) old-fashioned, stuck-in-the mud.
Person with old fashioned ideas which he is unwilling to change: Come to the disco and stop being such an old fogey!
You think me an old fogeyand an old tory, his thoughtful voice said. I saw three generations since O’Connel’s time. I remember the famine. Do you know that the orange lodges agitated for repeal of the union twenty years before O’Connel did or before the prelates of your communion denounced him as a demagogue? You fenians forget some things. (James Joyce, Ulysses. Penguin Books,1992. p. 38)