“Good Thing I’m a faggot” is a new meme that originated on 4Chan’s /b/ (Random) Imageboard, invoking a large amount of OC and spinoffs such as “Good thing I’m a nigger” and others that I won’t mention here.
4Chan is known for their Trolling and large amount of OC, some may refer to it as a Fountain of Trolls, OC, and “OP is a Faggot”