When I was shopping for a present for my g/f at the time I found one that was double ended, but the way it was shaped had a small part to go inside her vagina and a ridged side to the curve that would provide clitoral stimulation. Not sure if it vibrated or not. I think it was on www.adameve.com, but not sure.

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"BOY: On a hot summer night, would you offer your throat to the wolf with the red roses? GIRL: Will he offer me his mouth? BOY: Yes. GIRL: Will he offer me his teeth? BOY: Yes. GIRL: Will he offer me his jaws? BOY: Yes. GIRL: Will he offer me his hunger? BOY: Yes. GIRL: Again, will he offer me his hunger? BOY: Yes! GIRL: Yes. BOY: On a hot summer night, would you offer your throat to the wolf with the red roses? GIRL: Yes. BOY: I bet you say that to all the boys!" -Meatloaf