MS Paint Adventures references this phrase on this page in homestuck: http://www.mspaintadventures.com/?s=6&p=002224
I also distinctly remember hearing the same phrase in one of the three first books of the Avatar: the Last Airbender animated series.
I know from someone I know IRL that the author of Avatar: tLA grew up in the 80s, and a lot of the humor from the show comes from humor of the 80s. If need be, getting the author's name and background should be trivial.
Likely Avatar's author wasn't inspired to use the mentioned quote from MSPaint Adventures
MSPaint Adventures seems at earliest 90s humor.
So an educated guess points me to neither of these sources are an original source
Does anyone have any clues?