CB13 Sergeant Briefs Is this brief destined to become the hottest item in your underwear drawer? There’s only one way to find out. Designed by Cellblock 13, the Sergeant brief features a pouch made out of a super-thin, nearly sheer ribbed like material. With an eye-grabbing logo emblazoned across the elastic waistband, these are some seriously skimpy skivvies. Grab yours now… before they’re gone for good!