a good dose of Lactulose would not only ensure a stealthy exit, but also increase volume considerably for a one off. its awesome stuff and works differently to most laxatives. and it wont strain your colonI for one do not have a good enough relationship with my bowels that would enable me to 'crimp one out' on demand. We are barely on speaking terms...
The street would awake and the police called if I embarked on the usual titanic struggle between man and colon on someone's doorstep...
it's often the tool of poop stars of the 'scatalogical' genre, apparently.