Rockjob is a common term used in the early 1990s both for High school students and even Primary school students in Australia where the person called a Rockjob is identified as an;
2) got embarrassed,
3) or usually if in an argument have made an ass of themselves
john: what the hell is algebra!?
*john attends school wearing his pink sneakers*
everyone: OMFG! POOF
john: WELL YOUR MUM!
everyone: at least our mum doesnt resemble a gorilla!
*everyone laughs at john*