What are jockey boxer briefs? As the term suggests, it is some sort of underwear and is indeed very popular. They are short underwear for men and they are renowned briefs by fashion experts. Huge fashion lines have designed very smart jockey underwear outfits. These range from shorts, briefs, underwear, shirts and others. So if you are a fashion-conscious man, then you have a lot of styles and varieties to select from to accentuate your masculinity. In fact, many fashion houses have their own line of jockey underwear. Jockey underwear is short, well fitting and comfortable.