A slang term for one of those days when you go get Yaya's and then sit in the bathtub for like an hour.
Matthew had made his choice, exiting the restaurant with his chicken: it was time to go home and climb into a nice, relaxing bath; it was time to go sicko mode.
Where a person or animal has diarrhoea and tries to relieve themselves in a sanitary way but without knowledge of how severe it is and it turns out to be explosive diarrhoea and it is spread around the room.