Hei elei, kuck elei
It is probably the most famous Luxembourgish phrase in the Netherlands . This comes from the fact that, when RTL launched a television program in Dutch (RTL Veronique, today's RTL4), this program had to be officially "Luxembourgish", because it did not have a Dutch license and was only allowed to be broadcast as a "foreign" program Cable networks are included. Therefore, around midnight, when the program was over, or early in the morning, before it started, "Hei elei, kuck elei" was broadcast. Especially among young people, it had a certain cult status to watch "Hei elei" before (or after) going out and enjoy the successful program.