What is Grainus?
1.
The highest fiber fictional grain cereal.
B-Hole Bradly: "I got explosions from within the anus, it's cause I was chowing down Grainus"
2.
Quite possibly the most high fiber fictional grain breakfast cereal ever. Also quite possible the most repugnantly named fictional grain breakfast cereal ever.
B-Hole Bradley: "I got explosions from within the anus!"
Alejandro: "You must have been chowing on Grainus."