two-stager
A strenuous part of the human evacuation process which occurs when one engages in the act of wiping excess fecal matter from the rectum and has to evacuate for a second time, thus leading to the necessary engagement in yet another round of wiping the excrement from the anus.
After a scrumptious serving of Dean's meatballs, I took a huge two-stager which emitted a scent which replicated that of downtown Mumbai.