I think of "salesy" as an adjective for someone who is a cheesy, aggressive and superficial salesperson of whatever product or service they are pitching.
It means the same as for Christ's sake! but please note the spelling & syntax.
{John}: Hey Josh, quick! Check out that blimp about to crash into a radio tower!
{Josh}: For Christ sakes John, that looks just like the pictures of the Hindenburg crash that I've seen!!!
Your first name of Sakeya gives you a poised, gracious, and reserved nature.You are capable and clever and would excel in executive positions.As you are a private person, it is a challenge for others to get to know and understand you.Your reticence has caused you to suffer aloneness and misunderstandings.You would like to be easy-going and spontaneous but it does not come easily.You can express yourself better through writing than verbally.The mysteries of life appeal to you in your search for an understanding of the greater picture of life.
Used as a general term of exclamation or surprise similar to oh my lord, or oh my goodness, or oh shit. Mostly used by people in the 1930's, 1940's, and 1950's. Possibly a minced oath (softened form of swearing) substitute for "For the Lord's sake."
See also land sake.
Land sakes alive, my grandmother said. That sure was a swell sunset.