1 definition by Hadito Rodrigo Consuelo
When you drink a glass of prune juice and you have a bowel movement that seeps out slowly and you just can't get it to stop. A true BP is when the state of your gastrointestial system is (B)eyond (P)epto. The stool is generally dark in color and is reminiscent of the crude oil in the Gulf of Mexico. Depending on one's hygeine, dead crabs may end up in the toilet as well.
Chris: Yo, why'd you give me those prunes?
Mike: They are good for you bro!
Chris: My rectum is pullin' a BP right now!
Mike: They are good for you bro!
Chris: My rectum is pullin' a BP right now!
by Hadito Rodrigo Consuelo July 6, 2010