A whitish brown fungal substance similar to mildew. Milshit forms after water containing shit particles spills onto a surface and is not cleaned. Milshit takes 2-3 days to form and will usually result in a ruined carpet/wood floor. Most insurance companies do not cover milshit damage.
Person 1: Hey, did you happen to shit in the air conditioner this morning?
Person 2: Yes I did!
Person 1: Well it dripped down into the living room and onto the floor. You should clean it up before it milshits.