1) the vile smelly mixture of water, yeast, cum, and whatever else that has been inserted in or living in the vagina that comes out after squirting water in a dirty, usually old, vagina or "duesching." The water is inserted from a bag and subsequently collected in the baag.
2) A guy who thinks he is cool but in reality is the equivalent of a bag of duesch.
3) George Bush
Johnny is such a duesch bag.