("Under the Black Rose" - Literal translation "Under the Rose, Black"-) When the Mafia has a SECRET meeting they put a rose over the door way, that is a signal that the meeting is "Sub Rosa" (Under the rose) what happens in that room is NEVER to be mentioned out side that room, a BLACK Rose is the death sign..ergo our little "Yummy" is telling you that she (and you) will never tell what little delights you (the viewer) are going to experience with her...under penalty of death (see that black rose pendant around her neck??).