Believe me when I say I smurfed a mermaid.
I can only assume the safe word is, in fact, "EoFF".
That article is highly awesome. I miss Close Up most nights, so I never saw the original story. It's even better that it's actually a working, practical prosthetic that gives a new degree of freedom to someone who never had it before.
If the same could be done for me, it'd have to be wings. I know it's physically impossible with today's technology, but unrestrained flight would be the most powerfully liberating feeling imaginable.
Something that can teleport/fly.