Remitent of a Strong bad mail and abreviation of "fhqwhgadshgnsdhjsdbkhsdabkfabkveybvf". This was probably just random typing; many letters in this name are next to each other on a typical English-language QWERTY keyboard. In attempting to reply, Strong Bad shortened the unwieldy name to "fhqwhgads".
Later that year, he wrote a song about it and The Cheat created a music video about fhqwhgads, "Everybody to the Limit". The song is later featured in the game Dancin' Bubs.
I said come on Fhqwhgads
Everybody to the limit
Who's that? It's to the limit
Everybody come on Fhqwhgads
i love u
So now you know.
i love u
dag yo, my compy's toast.
Person B: "Do you even know what that's from?"
Person A: "Hells yeah"
Person B: "Oh yeah? What does fhqwhgads mean then?"
Person A: "..." (runs)
This word was developed in strongbadia around the year 2002. It means someone who stalks someone else.