right from during the chunnin exam elimination round where orochimaru told kabuto to kill sasuke.

oro: kabuto, whats the meaning of this?
kabuto: what...
oro: you didnt bone me last night, you know how i feel about this
kabuto: i'm sorry sir, i'll go bone that sasuke kid
oro: YOU BETTER
kabuto: hehe...yeah
oro: dont try to betray me kabuto, you know i could bone you down
kabuto: *looking nervous* yes sir, your one good bone-er
oro: i'm just kidding kabuto, i love you
kabuto: yes sir
oro: see you tonight
kabuto:....bye sir.

that IS how it went wasnt it?