Lyric discussion by books_out_loud 

Cover art for Jailhouse Rock lyrics by Jim Yoshii Pile Up, The

the "line"(S) that you're probably overlooking are

"Pretty and tough, the warden always gets it up. The prison boys are rough, so the warden cuffs 'em up."

these lines, plus the homosexual tendancies that develop during a prolonged stay in prison. make it a pretty good allegory for sexual abuse.