>>497
It wasn't even apart of Homestuck originally, it was a parody of those two-dudes-on-a-couch gamer comics (e.g. Penny Arcade, Ctrl-Alt-Del, etc.) that were almost everywhere back then.

The author decided to attribute SBaHJ to some kid in Homestuck, while trying to give latter SBaHJ comics a vague connection to Homestuck, and overexcited fans tried to exaggerate that connection to drag more people into Homestuck.