Ghost Roast Share definition Flag To roast someone by omission. Generally without them knowing they've been roasted. "Did you see that congratulations email Lindsay sent? Yeah she totally Ghost Roasted Bryan and Michael by leaving them off! Sucks to suck." Ghost Roast by RoastyBee June 6, 2018 0 0 Get merch Get the Ghost Roast mug. Buy Now — $32.95 See more merch