How do I electrocute myself?

As per this question, I've already figured out I can drug myself. But there's another Steam achievement that says to complete a procedure after electrocuting myself.

Clearly this is something I have to try.

How can I achieve this? When I think about things in the environment that might electrocute me, nothing comes to mind, and the achievement icon doesn't seem very helpful either.

Electrocuting yourself is simple! Just stick a scalpel (or anything small and metal, really) into this electrical outlet (within 10 seconds of starting if you want the achievement)!

It will reverse your movement, making surgery incredibly difficult. Left becomes right, forward becomes backward, and the awkward controls become... awkwarder.

It's worth mentioning that there is also an achievement for being both drugged and electrocuted at the same time, as well as a subsequent achievement for completing the surgery in that fashion (within 20 seconds of starting).