Here's my ultimate fantasy: I answer an ad looking for subjects for a long-term anesthesiology experiment. The mad scientist selects me and puts me under after I sign the consents. Once I'm out, he induces me into an irreversible coma and attaches a milking device to my cock and an electric stimulator to my balls so that I am nothing more than a life-support system for a cum factory. He stores all my cum and keeps me alive long enough for him to accumulate enough cum to fill a vat in which he can preserve and display my nude corpse. He milks the final few drops, pulls the plug on my life support, and puts my dead body into permanent storage.