3rd Class Cadet, or sophomore, at West Point (USMA). As a yuk, a cadet is finally allowed to voice his/her opinion about life at the Academy. They come off as bitter. Hence, the name.
Yuk: I'm not a plebe, but no one takes me seriously, I still do a lot of the Corps' bitch work, I'm taking 20+ credit hours this semester, and my plebe just failed his APFT, meaning I'll be up doing pt with him every morning. FML
Also, see Yearling