I have one of these things and I want to use it on myself but I don't have that goddamn little plastic key and I can't get the thing to turn, what do I do besides cry and throw a tantrum because I already did that.

Is the plastic key really that hard to replicate? I doubt the lock is very complex.

Use your brain.

I just ended up ripping the test out of the plastic and using it like a dip stick. It worked.

http://en.wikipedia.org/wiki/Jersey_Devil

It took me several other people's posts to figure out you must mean some sort of home piss test. I sure didn't from your op. Hell, piss test wasn't even in the top 4 guesses I had based on what you said.

Next time, assume most people won't know exactly what you are talking about and give more detail. You might even get more answers. You sure won't get your thread locked, which I'll do if I haven't a clue what you mean again.