A device connected to a hose that is used to carry ones urine from the inside, to the outside of my dad's garage.
"Look out man, I gotta use the funnel."
"Don't forget to flush."
Derivate from the Word "bumm!", the german version of "boom!" which (the german version of course) is widely used in the translation of comics by Carl Barks.
The derivate "bum!" is to be found in abundance in comics by Katz&Goldt, two cartoon superstars from Germany. Using the word in german comics provides a intellectual tongue-in-cheek connotation to all those notorious Donald Duck books.