I tried this once. The body is too warm.
The sushi gets really gross really fast.
Like here:
>>22165459 Girl is about to barf really bad. Shitting starts a bit later, but not before the barfing stops. If she's lucky she has a toilet facing the tub so she doesn't have to choose whether to barf or shit onto the floor, she can choose tub for one. (Shitting is best for tub because it's usually less chunky which will clog the tub.)