The magician walks on stage carrying an ordinary briefcase, which measures only 15” x 10” x 2 ½”, that he puts down on the table. When he opens it up he removes a real two liter bottle or other large item that cannot possibly fit in the briefcase. After the production the case can be shown all around.
This is one of the funniest props for the comedy magician. Can also successfully be used by a clown or M.C. This is an improved version of the effect where you can show both the inside and outside of the briefcase at the end of the effect.