Dana Barrett: [possessed by the Gatekeeper] Are you the Keymaster?
Dr. Peter Venkman: Not that I know of. [Door immediately slams in his face]
Dr. Peter Venkman: Not that I know of. [Door immediately slams in his face]
Dana Barrett : [possessed by the Gatekeeper] Are you the Keymaster?
Dr. Peter Venkman : Not that I know of. [Door immediately slams in his face]
http://www.moviequotedb.com/movies/ghostbusters/quote_9239.html