My mum's gone all techie

Well, actually she hasn't at all. Except inasmuch as she always has been a bit of a computer fiend. But that's her problem, and nothing to do with this post. This post is quite different. This post is all about the notice in the staff kitchen that says: SPIKED?

When I was a teenager, I remember hearing lots and lots of dire warnings from my mother (and uncle, and grandparents; they were a Dire Warning kind of family) that going out to a disco, or similar, almost certainly meant having sinister strangers (or even sinister friends) put Something in your drink. I was never quite clear on what this something was, but formed the general impression that my mother believed I would leave the premises irrecoverably hooked on some dangerous drug. As a result (of this and other, dafter things) I concluded my mother was extremely silly and I could never believe a word she said.

Then came the age of Rohypnol, and now the Mum that is Occupational Health & Safety is putting up posters in the kitchen warning me not to let anyone buy me a drink, or indeed get close to any drink I may have independently bought for myself. What's more, they are claiming to have 'a limited number' of gadgets that will somehow, mysteriously, let me know if my drink has in fact been spiked. How very peculiar.

I can't decide whether I am more curious to know how on earth such a gadget would work (I don't want to be dropping foreign objects in my glass, do I? That would be weird); or to know whether anybody actually asked for one of them. And if the limited number were in fact snapped up in record time, does that make my colleagues paranoid? Or me foolhardy?