Dude I have been Murray Browned

Not delivering on a promise or offering something you have no intent of delivering on.

Brown: Thank you for the drinks and smokes. What can I get you? I am going up to the bar will get you what every you like.

Me: Its been 20 minutes I wonder if he is coming back, I am thirsty, confirmed he is gone.

Me: Dude I have been Murray Browned