Yes, around 1971-72, Kraft experimented with this flavor and handed out lots of free samples, one per customer, which my folks probably picked up at a supermarket and were about to test.. read more
Low and behold, my siblings got blamed one by one when my folks thought that they had got into the Grapefruit Tang, so they were interrogated and not me. Much later the topic came up and I said Tang makes a good grapefruit flavor. read more