A phrase common in the gay community to mean that one is publicly interested in anonymous sex. It refers to the practice of one turning ones banana bunch curved upward in the shopping cart at the grocery store. This practice means that the "cart pusher" is looking to get his "cart pushed."
While Grant was at the store simply shopping for strudel, he was quickly distracted when he saw that Brandon had gone bananas up.
by meatlocker January 11, 2011