Don't Jerk Off On My Breakfast
when someone is ruining something and telling you that what you are doing is wrong, not to help you out, but for no apparent reason. As a response you tell them to not jerk off on your breakfast.
I was having a great morning, but then Benji had to ruin my morning by telling me that the Giants were 1-7 so I told him "Please Benji, from now on, Don't Jerk Off On My Breakfast"