sushiloaf Share definition Flag The bowel movement that occurs anywhere from 2 to 6 hours after you eat way too much sushi. Hey Bill, I'm gonna skip the budget meeting... I've got to hit the head to try and get this soy sauce stain out of my shirt and drop off a sushiloaf. sushiloaf by drewsac February 28, 2011 0 0 Get merch Get the sushiloaf mug. Buy Now — $32.95 See more merch