One of my favourite fantasies involves me being a toilet to my BBW wife for a 24 hour period. The big lady is given a special toilet chair to sit on, and a table. There's loads of food and drink on the table. I lie underneath my wife's bum for the whole day. My big lady usually poos three times a day, but with extra food she'd probably do more. The fat lady pushes out a turd whenever she needs, then carries on eating. The lady isn't concerned with what's going on underneath, she just eats, drinks, wees and shits. Her slave, underneath, has to consume everything that comes from the fat lady's body. 

Sometimes, in a variant of that fantasy, I imagine being underneath the big lady together with the young Veronica Moser. Between us, we eat and drink everything. Veronica encourages me to eat as much shit as possible, which is fantastic. I really want to eat every bit of poo that the fat lady pushes out.