As a fire inspector, I once responded to a fire crew complaint at a local Waffle House of grease pouring out of the roof rain spouts onto the ground. We went up on the roof and found a huge puddle of grease surrounding the hood vent. The roof was so squishy from being saturated from grease, we couldn't get with five feet of the vent. Certain death for a firefighter going up on the roof in a a fire.
EEwwww, yuck! Now I’ll never eat at another one for sure.