"Me so soup"

Have a hard time remembering any context of this joke personally, but I have a distinct memory of it. One of the grumps says "Me so soup" and they both bust out laughing.

After googling a bit I found its simular to a line in Full Metal Jacket: "Me so horny". In the same scene is also the linee "Me love you long time" and "Me sucky sucky", which also tickled some distinct memories of the Grumps saying them, so its probably a play on that line and miso soup

I don't really like the grump's 'accent humor', but the line "Me so soup" keeps popping up in my mind evey time I eat miso soup even years later, so I have to find it, haha