botty bovril

Rusty Water, Fizzy Gravy 'sans' fizz.

A hot, meaty smelling liquid bowel movement, usually experienced the day after a lukewarm steak bake from Greggs.

"Bloody hell, Susan. I wish I hadn't had that dodgy meat pie on the way home from the petrol station last night. My arse has been streaming botty bovril almost non stop since 5 this morning. My legs are numb."