Bombing the Bismark

To drop dirty bombs on a imaginary ship in the toilet bowl.
To defecate.

"This Crohn's is murder, I've had to bomb the Bismark 3 times this morning."
or
Tim: "Where are you going Tom?"
Tom: "Bombing the Bismark, that bran has gone right through me!"

by V3gas4ce September 2, 2009