new man dump
A dump so large, or so necessary, and so relieving as to have you walk away from the can smiling and saying "OMG, what a great dump, I feel like a new man." Hence, a "new man dump."
After eating at Taco Joe's last night, then a few drinks at the bar afterwards, plus a midnight snack, I took a New Man Dump this morning. I felt so good I am still smiling.