Hrmm. .*Thinks Degration*

They could milk you and make you drink your own sperm. Use a strap on, on you all in video while getting you to say how much you like it (Through threatening to hurt you off camera)

I think that might be more sufficiant enough for them to blackmail into silence. Depends how far you want to go really, there are far more degrading things that could happen but it's all about the context and how much you want to do.