特仑苏的代言人是牛奶呢

This is an interesting joke-like net name. '特仑苏'is a brand name of high-end milk products. This sentence plays with the concept of advertising endorsements implying牛奶(milk) being the brand ambassador of 特仑苏(Telunsu) itself. It adds humor because milk can't truly endorse anything since it's an inanimate object.