NWoTD - Horrendass

Parents out there know this one. When your little bundle of joy cuts loose with what can best be described as toxic swampgas and you are absolutely positive they have made an enormous deposit at the bank of poo. Only when you open their diaper there's nothing there. That's horrendass, a fart so bad you are certain there's a dump to get changed.

Horrendass - a fart so toxic and nauseating that the parent is absolutely certain of a sizable poop when there's nothing at all.