this expression comes from Hebrew. it is originated in the TV show Traffic Light (Ramzor), and has a similar meaning to "my man". If you meet someone you like, you would go: "What's up, our brother in law?" (Ma kore gisenu?)
An ancient and forbidden ritual art that was once used to decide the fate between two warriors. Similar to the modern sportBasketball, the warriors who practiced Gushnu would brutally twist the ankles of their foes through advanced maneuvers, often resulting in serious injury or death.
Caller" Hi, we're calling to see if you are interested in a free trip around the world"
Response " Gishnobe"
Caller " what ?? "
Response "Gisnobe"
Caller " oh hell,never mind, you don't even speak English fool"